Human activities are having significant impacts on ecosystems. The growing human population puts increasing pressure on natural resources and contributes to problems like pollution, habitat loss, and declining biodiversity. Effective management of resources and conservation efforts are needed to protect ecosystems and allow them to continue supporting human populations into the future.
This document provides an overview of current environmental issues facing the Earth. It discusses how human population growth and industrialization have negatively impacted the environment through increased consumption of non-renewable resources, pollution, and loss of biodiversity. As human societies developed from hunter-gatherers to agricultural to industrial, their demands on the environment expanded and dependence on fossil fuels rose, resulting in problems like pollution and depletion of resources. The core issues discussed are overconsumption, pollution, and biodiversity loss due to rising human populations. The document also introduces the concept of sustainability and the goal of creating a sustainable society that does not exceed the Earth's limits.
Human activities can negatively impact the environment by depleting renewable resources and causing pollution. Sustainable development aims to meet human needs while preserving the environment. Some key threats include deforestation, overfishing, soil erosion, and the introduction of invasive species. Conservation efforts and transitioning to renewable resources can help reduce environmental harm.
Human activities can negatively impact the environment by affecting renewable resources like land, forests, air, and water. Sustainable development aims to use natural resources without depleting them to meet human needs without long-term environmental harm. Renewable resources like trees, water, and food can regenerate, while nonrenewable resources like fossil fuels cannot be replenished. Human activities like deforestation, overfishing, pollution, and increasing greenhouse gases are threatening biodiversity and causing problems like global warming. Conservation efforts aim to preserve habitats and wildlife.
Biology - Chp 6 - Humans In The Biosphere - PowerPointMr. Walajtys
Human activities can affect the biosphere by altering habitats, overharvesting resources, and polluting the environment. Resources are either renewable like forests and fisheries, which can replenish if sustainably managed, or nonrenewable like fossil fuels. Two major threats to the global environment are ozone depletion, which is addressed by banning CFCs, and global climate change caused by greenhouse gas emissions. Conservation aims to protect biodiversity and ecosystems for humanity's long term well-being.
This document summarizes key concepts about biological communities and the environment. It discusses how organisms interact through coevolution, predation, and symbiosis. It also addresses competition and how it shapes communities. Major biological communities or biomes are examined, including tropical rainforests, savannas, taiga, tundra, deserts, and temperate grasslands and forests. The document also covers issues like global change through acid rain, destruction of the ozone layer, the greenhouse effect and global warming, as well as their effects on ecosystems. Potential solutions to environmental problems through laws, taxes, education, individual actions like recycling are proposed.
Chapter 20 section 1 notes (population impact on the environment)Mr. Motuk
1) The global human population has grown rapidly since the 1800s due to advances in modern medicine, sanitation, and nutrition. The population grew from 1 billion to over 6.8 billion people currently and is predicted to reach 9 billion by 2050.
2) As the population increases, so does its environmental impact through increased resource consumption, waste production, and pollution. Individuals will produce over 53,000 kg of garbage and consume 18 million liters of water in their lifetime.
3) Daily human activities like electricity and fossil fuel use, food and packaging production, and waste disposal damage the environment. The growing population threatens to exceed Earth's limited resources and carrying capacity if environmental impacts are not reduced through conservation
ECS111 P SEALEY EXAM 2 STUDY QUESTIONS 2019 1 .docxtidwellveronique
ECS111 P SEALEY EXAM 2 STUDY QUESTIONS 2019
1
EXAM 2 IS TUESDAY APRIL 9th, 2019
REVIEW ESFCW CHAPTERS 5 and 6
EXAM 2 is worth 15 POINTS
1. Which of the following statements is an example of climate?
a. The temperature today is unusually cold for this time of year.
b. Heavy local rains caused flooding in low-lying areas.
c. Long winters and hot, humid summers are typical of the upper Midwest.
d. If the drought in Oklahoma continues next year, it will be the worst since the Dust Bowl.
e. High humidity intensifies the oppressive heat.
2. The evolution of the average behavior of the Earth’s atmosphere over time is called
a. weather. b. climate.
c. climate change. d. hurricanes.
e. stratospheric migration.
3. Components of the climate system do not include
a. the sun. b. oceans.
c. glaciers. d. the atmosphere.
e. cosmic rays.
4. What is e-waste and why is it a concern?
5. Which of the following is not a driver in Earth’s climate?
a. The gravitational pull of the moon b. The sun
c. Ocean currents d. Carbon dioxide in the atmosphere
e. Clouds
6. Which of the following statements concerning the composition of the atmosphere is true?
a. Water consistently is the gas present in the highest concentrations.
b. N2 and O2 concentrations tend to be variable.
c. CO2 is present in the lowest concentration of all gases.
d. Methane concentration is about 17 parts per million by volume.
e. Carbon monoxide concentration is 388 parts per million.
7. What is the difference between a sanitary land fill and an open dump? Does garbage decompose more quickly in a
sanitary landfill?
8. If you were to measure the composition of the atmosphere across the globe, the composition would be relatively
constant except for
a. nitrogen and oxygen.
b. oxygen and helium.
c. helium and carbon dioxide.
d. carbon dioxide and water vapor.
e. water vapor and ozone.
9. Ozone exists mostly
a. in the stratosphere. b. underground in reservoirs.
c. dissolved in water. d. in the cryosphere.
e. None of the above
ECS111 P SEALEY EXAM 2 STUDY QUESTIONS 2019
2
10. Incident ultraviolet radiation from the sun is blocked by
a. clouds. b. sulfur dioxide.
c. chlorofluorocarbons. d. methane.
e. ozone.
11. Are most plastics degradable, biodegradable or non-degradable waste? How well do plastics break down?
12. The greatest quantity of fresh water is held in
a. rivers. b. lakes. c. ground water. d. oceans. e. glaciers and ice caps.
13. Which of the following does not play a role in reflecting incident sunlight back into space?
a. Methane b. Ice
c. Clouds d. Sulfur oxides
e. Particulate matter suspended in the atmosphere
14. Other than CO2, what greenhouse gas has the longest lifetime in the atmosphere?
a. Nitrous oxide b. Ozone
c. CFCs d. Methane
e. Both a and c
15. Without the greenhouse effect, the atm.
This document provides an overview of current environmental issues facing the Earth. It discusses how human population growth and industrialization have negatively impacted the environment through increased consumption of non-renewable resources, pollution, and loss of biodiversity. As human societies developed from hunter-gatherers to agricultural to industrial, their demands on the environment expanded and dependence on fossil fuels rose, resulting in problems like pollution and depletion of resources. The core issues discussed are overconsumption, pollution, and biodiversity loss due to rising human populations. The document also introduces the concept of sustainability and the goal of creating a sustainable society that does not exceed the Earth's limits.
Human activities can negatively impact the environment by depleting renewable resources and causing pollution. Sustainable development aims to meet human needs while preserving the environment. Some key threats include deforestation, overfishing, soil erosion, and the introduction of invasive species. Conservation efforts and transitioning to renewable resources can help reduce environmental harm.
Human activities can negatively impact the environment by affecting renewable resources like land, forests, air, and water. Sustainable development aims to use natural resources without depleting them to meet human needs without long-term environmental harm. Renewable resources like trees, water, and food can regenerate, while nonrenewable resources like fossil fuels cannot be replenished. Human activities like deforestation, overfishing, pollution, and increasing greenhouse gases are threatening biodiversity and causing problems like global warming. Conservation efforts aim to preserve habitats and wildlife.
Biology - Chp 6 - Humans In The Biosphere - PowerPointMr. Walajtys
Human activities can affect the biosphere by altering habitats, overharvesting resources, and polluting the environment. Resources are either renewable like forests and fisheries, which can replenish if sustainably managed, or nonrenewable like fossil fuels. Two major threats to the global environment are ozone depletion, which is addressed by banning CFCs, and global climate change caused by greenhouse gas emissions. Conservation aims to protect biodiversity and ecosystems for humanity's long term well-being.
This document summarizes key concepts about biological communities and the environment. It discusses how organisms interact through coevolution, predation, and symbiosis. It also addresses competition and how it shapes communities. Major biological communities or biomes are examined, including tropical rainforests, savannas, taiga, tundra, deserts, and temperate grasslands and forests. The document also covers issues like global change through acid rain, destruction of the ozone layer, the greenhouse effect and global warming, as well as their effects on ecosystems. Potential solutions to environmental problems through laws, taxes, education, individual actions like recycling are proposed.
Chapter 20 section 1 notes (population impact on the environment)Mr. Motuk
1) The global human population has grown rapidly since the 1800s due to advances in modern medicine, sanitation, and nutrition. The population grew from 1 billion to over 6.8 billion people currently and is predicted to reach 9 billion by 2050.
2) As the population increases, so does its environmental impact through increased resource consumption, waste production, and pollution. Individuals will produce over 53,000 kg of garbage and consume 18 million liters of water in their lifetime.
3) Daily human activities like electricity and fossil fuel use, food and packaging production, and waste disposal damage the environment. The growing population threatens to exceed Earth's limited resources and carrying capacity if environmental impacts are not reduced through conservation
ECS111 P SEALEY EXAM 2 STUDY QUESTIONS 2019 1 .docxtidwellveronique
ECS111 P SEALEY EXAM 2 STUDY QUESTIONS 2019
1
EXAM 2 IS TUESDAY APRIL 9th, 2019
REVIEW ESFCW CHAPTERS 5 and 6
EXAM 2 is worth 15 POINTS
1. Which of the following statements is an example of climate?
a. The temperature today is unusually cold for this time of year.
b. Heavy local rains caused flooding in low-lying areas.
c. Long winters and hot, humid summers are typical of the upper Midwest.
d. If the drought in Oklahoma continues next year, it will be the worst since the Dust Bowl.
e. High humidity intensifies the oppressive heat.
2. The evolution of the average behavior of the Earth’s atmosphere over time is called
a. weather. b. climate.
c. climate change. d. hurricanes.
e. stratospheric migration.
3. Components of the climate system do not include
a. the sun. b. oceans.
c. glaciers. d. the atmosphere.
e. cosmic rays.
4. What is e-waste and why is it a concern?
5. Which of the following is not a driver in Earth’s climate?
a. The gravitational pull of the moon b. The sun
c. Ocean currents d. Carbon dioxide in the atmosphere
e. Clouds
6. Which of the following statements concerning the composition of the atmosphere is true?
a. Water consistently is the gas present in the highest concentrations.
b. N2 and O2 concentrations tend to be variable.
c. CO2 is present in the lowest concentration of all gases.
d. Methane concentration is about 17 parts per million by volume.
e. Carbon monoxide concentration is 388 parts per million.
7. What is the difference between a sanitary land fill and an open dump? Does garbage decompose more quickly in a
sanitary landfill?
8. If you were to measure the composition of the atmosphere across the globe, the composition would be relatively
constant except for
a. nitrogen and oxygen.
b. oxygen and helium.
c. helium and carbon dioxide.
d. carbon dioxide and water vapor.
e. water vapor and ozone.
9. Ozone exists mostly
a. in the stratosphere. b. underground in reservoirs.
c. dissolved in water. d. in the cryosphere.
e. None of the above
ECS111 P SEALEY EXAM 2 STUDY QUESTIONS 2019
2
10. Incident ultraviolet radiation from the sun is blocked by
a. clouds. b. sulfur dioxide.
c. chlorofluorocarbons. d. methane.
e. ozone.
11. Are most plastics degradable, biodegradable or non-degradable waste? How well do plastics break down?
12. The greatest quantity of fresh water is held in
a. rivers. b. lakes. c. ground water. d. oceans. e. glaciers and ice caps.
13. Which of the following does not play a role in reflecting incident sunlight back into space?
a. Methane b. Ice
c. Clouds d. Sulfur oxides
e. Particulate matter suspended in the atmosphere
14. Other than CO2, what greenhouse gas has the longest lifetime in the atmosphere?
a. Nitrous oxide b. Ozone
c. CFCs d. Methane
e. Both a and c
15. Without the greenhouse effect, the atm.
As the human population grows, demand for Earth's resources increases and puts pressure on renewable and nonrenewable resources. Technological advances have helped increase Earth's carrying capacity by supporting agriculture and medicine. However, fossil fuel emissions contribute to pollution and climate change, affecting the biosphere. Air pollution from fossil fuels can harm human health and the environment through effects like smog, acid rain, and the greenhouse effect. Pollution also threatens freshwater ecosystems and enters the food chain through biomagnification.
Human beings have an important role to play in environmental action and securing the future of the planet. The environment consists of the atmosphere, lithosphere, hydrosphere, and biosphere that surround and influence human and other life on Earth. Some key environmental problems facing the Philippines include water and air pollution, illegal logging, poverty, crowding, and improper garbage disposal that threaten sustainability.
This document contains a chapter from an NCERT Grade 7 Geography textbook. It includes 14 multiple choice questions about environmental concepts like the lithosphere, hydrosphere, atmosphere and biosphere. It also defines these terms and includes sections on picture boards, the barter system, question and answers, defining key terms, and fun facts about the environment.
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B)
The document is a practice exam for an environmental science course. It contains 50 multiple choice questions covering various topics in environmental science, including the scientific method, ecosystems, population growth, energy sources, water resources, air pollution, climate change, and environmental economics. The questions assess understanding of key concepts and theories presented in an environmental science textbook. An answer key is provided to check responses to the exam questions.
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
The document is a practice exam for an environmental science course. It contains 50 multiple choice questions covering various topics in environmental science, including the scientific method, ecosystems, population growth, energy sources, water resources, air pollution, climate change, and environmental economics. The questions assess understanding of key concepts and issues addressed in the course textbook. An answer key is provided to check responses to the exam questions.
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B)
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
Unit 1 ch1 s1 understanding our environmentwja10255
This document provides an overview of environmental science, including how humans interact with and impact the environment. It discusses the fields of study related to the environment, how early humans hunted and gathered with minimal impact but how the agricultural and industrial revolutions led to overpopulation and issues like resource depletion, pollution, and loss of biodiversity that threaten the environment.
Module 5 Social Issues and Environment.pptBhavanaHN5
This document provides an overview of various social issues related to the environment and environmental protection acts in India. It discusses topics like climate change, global warming, acid rain, ozone layer depletion, nuclear accidents, wasteland reclamation, consumerism and waste products. For each topic, it describes the causes, effects and methods of control. It also summarizes the Air (Prevention and Control of Pollution) Act and Water (Prevention and Control of Pollution) Act, which established pollution control boards to monitor air and water pollution. The objective is to educate about important environmental issues and legislation in India.
Sangyun Lee, 'Why Korea's Merger Control Occasionally Fails: A Public Choice ...Sangyun Lee
Presentation slides for a session held on June 4, 2024, at Kyoto University. This presentation is based on the presenter’s recent paper, coauthored with Hwang Lee, Professor, Korea University, with the same title, published in the Journal of Business Administration & Law, Volume 34, No. 2 (April 2024). The paper, written in Korean, is available at <https://shorturl.at/GCWcI>.
As the human population grows, demand for Earth's resources increases and puts pressure on renewable and nonrenewable resources. Technological advances have helped increase Earth's carrying capacity by supporting agriculture and medicine. However, fossil fuel emissions contribute to pollution and climate change, affecting the biosphere. Air pollution from fossil fuels can harm human health and the environment through effects like smog, acid rain, and the greenhouse effect. Pollution also threatens freshwater ecosystems and enters the food chain through biomagnification.
Human beings have an important role to play in environmental action and securing the future of the planet. The environment consists of the atmosphere, lithosphere, hydrosphere, and biosphere that surround and influence human and other life on Earth. Some key environmental problems facing the Philippines include water and air pollution, illegal logging, poverty, crowding, and improper garbage disposal that threaten sustainability.
This document contains a chapter from an NCERT Grade 7 Geography textbook. It includes 14 multiple choice questions about environmental concepts like the lithosphere, hydrosphere, atmosphere and biosphere. It also defines these terms and includes sections on picture boards, the barter system, question and answers, defining key terms, and fun facts about the environment.
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B)
The document is a practice exam for an environmental science course. It contains 50 multiple choice questions covering various topics in environmental science, including the scientific method, ecosystems, population growth, energy sources, water resources, air pollution, climate change, and environmental economics. The questions assess understanding of key concepts and theories presented in an environmental science textbook. An answer key is provided to check responses to the exam questions.
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
The document is a practice exam for an environmental science course. It contains 50 multiple choice questions covering various topics in environmental science, including the scientific method, ecosystems, population growth, energy sources, water resources, air pollution, climate change, and environmental economics. The questions assess understanding of key concepts and issues addressed in the course textbook. An answer key is provided to check responses to the exam questions.
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B)
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
SCI 256 Final Exam Answers
FINAL EXAM TEST
1. According to the Environmental Science text, the environmental statement of the
1990s was “saving our planet”. Is earth’s very survival really in danger?
A) no, because in the long view, the changes humans have made to earth will be
cleansed by natural processes
B) no, because sustainability refers only to the next 2 generations of humans
C) yes, because resources are becoming really sparse
D) yes, because energy will run out
E) none of these
2. The total amount of food produced each year worldwide is sufficient to feed all the
world’s people today. Why do famines nevertheless occur?
A) food production is insufficient in some local areas
B) logging destroys agricultural land
C) worldwide transportation of food is inadequate
D) severe local shortage of firewood affects the ability to cook
E) food production is insufficient in some local areas and worldwide
transportation of food is inadequ
Unit 1 ch1 s1 understanding our environmentwja10255
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Module 5 Social Issues and Environment.pptBhavanaHN5
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Presentation slides for a session held on June 4, 2024, at Kyoto University. This presentation is based on the presenter’s recent paper, coauthored with Hwang Lee, Professor, Korea University, with the same title, published in the Journal of Business Administration & Law, Volume 34, No. 2 (April 2024). The paper, written in Korean, is available at <https://shorturl.at/GCWcI>.
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2. Unit V: Ecology
Chapter 16: Human Impact on Ecosystems
I. Human Population Growth and Natural
Resources (16.1)
A. Earth’s human population continues to
grow
1. Earth’s Carrying Capacity
a. Thomas Malthus
(late 1700’s)- studied
human population
growth and said was
growing faster than
Earth’s resources
3. b. Modern scientists use his observations and
predictions when describing ecosystem’s carrying
capacity
c. Current human population is about 6 billion.
d. Not sure what the limit (carrying capacity) is for
size of human population.
4. 2. Technology and Human Population
a. Humans have modified their environment
through agriculture, transportation, medical
advances, sanitation,etc. This increased the
carrying capacity
5. b. Technologies have allowed Earth to support far
more people than Malthus could have imagined.
6. B. The growing human population exerts pressure
on Earth’s natural resources
1. nonrenewable resources- they
are used faster than they are
formed (e.g. oil, natural gas, coal)
7. 2. renewable resources- resources that cannot be
used up or can replenish themselves over time
(e.g. wind energy, solar, lumber, etc.)
a. As human population continues to grow,
management of renewable and
nonrenewable resources will play important
role
b. Today, the U.S. uses
more resources and
generates more waste than
any other country (1 ton of
waste per person per year)
8. C. Effective management of Earth’s resources will
help meet the needs of the future
1. Effects both current and future generations
2. Ecological footprint- The amount of land
necessary to produce and maintain enough
food and water, shelter, energy and waste
9. a. Varies from country to country (smaller in
developing countries)
b. Developing countries like China and India have
smaller footprint per individual, but many more
people
10. II. Air Quality (16.2)
A. Pollutants accumulate in the air
1. Pollution- describes any undesirable
factor, or pollutant, that is added to the
air, water, or soil
11. a. Effect can be immediate or delayed
b. Effects may add up over time and disrupt
functions of ecosystems
12. 2. Smog and Ozone
a. Smog- type of air pollution caused by
interaction of sunlight with pollutants
produced by fossil fuel emissions
13. b. Particulates- microscopic bits of dust, metal,
and unburned fuel (1-10 microns in size) that are
produced by many different industrial processes
14. c. Ozone- produced by reactions of nitrogen oxide
and oxygen forming ozone (O3)
1). ozone harmful to organisms
2). Also forms
important protective
layer in atmosphere
to protect against
ultraviolet rays
found in sunlight
15. d. Acid Rain- chemicals from fossil fuel emissions
can lead to formation of acid rain that can affect
many environments
16. B. Air pollution is changing Earth’s biosphere
1. Scientists have been studying the periodic
changes in Earths temperature and
relationship to carbon dioxide levels
17. 2. Greenhouse effect- greenhouse gasses act like
insulator to slow loss of heat through atmosphere
a. Include: water vapor, carbon dioxide,
methane
b. Absorb infrared radiation trying to
escape into space from Earth’s surface
18. 3. Global warming- the trend of increasing global
temperatures
a. Changes are normal part of Earth’s climate
cycle
b. Human impact may be speeding up
production of greenhouse gasses and global
warming
19. c. Predict temperature increase of 1.4 - 5.8°C
by the year 2100. Could dramatically effect
Earth’s biosphere
20. III. Water Quality (16.3)
A. Water pollution affects ecosystems
1. Chemical contaminants, raw
sewage, trash, etc. end up in rivers,
lakes, and aquifers all over the world
21. 2. Indicator species- a species that can provide a
sign, or indication, of the quality of the ecosystems
environmental conditions
22. B. Biomagnification causes accumulation of
toxins in the food chain
1. biomagnification- as pollutant
moves up the food chain, it’s
concentration increases
2. Many pesticides dramatically
effect top level consumers
(predators)
23. IV. Threats to Biodiversity (16.4)
A. Preserving biodiversity is important to the
future of the biosphere
1. The loss of habitat
and growing
pollution problems
are affecting
animaland plant
population around the
world
24. 2. The loss of biodiversity has a long term effects
on stability of ecosystems
25. B. Loss of habitat eliminates species
1. As human population grows and expands
into new areas, they displace large numbers
of wildlife
26. 2. Habitat fragmentation- when barrier forms that
prevents an organism from accessing its entire
home range
a. Growing problem (urban sprawl)
b. Beginning to address problems
27. C. Introduced species can disrupt stable
relationships in ecosystem
1. Introduced/Invasive species- any
organism that was brought to an ecosystem
as the result of human activities
28. a. Can have detrimental effect on native species
b. Can out-compete native species and drive them
out
30. V. Conservation (16.5)
A. Sustainable development manages
resources for present and future generations
1. Sustainable development- a
practice in which natural resources are
used and managed in a way that meets
current needs without hurting future
generations
a. Covers wide range of
resource management
b. Has changed way we
harvest natural resources
31. B. Conservation practices focus on a few species
but benefit entire ecosystems
1. Endangered Species Act-
designed to protect individual
species by establishing
protection for organism and
its environment
32. 2. Often called Umbrella species (listed species),
because its protection also protect wide range of
other species
3. As result, entire ecosystems can benefit from
efforts to save a single species
33. B. Protecting Earth’s resources helps protect our
future
1. Global warming, pollution, and
loss of biodiversity are only a few
of the direct threats to our planet
34. 2. Protecting Natural resources
a. Environmental Protection Agency-
created as part of National Environmental
Policy Act in 1970
b. Led to development of policies and
regulations to protect environment across
U.S.
35. 1). Clean Air Act, Clean Water Act, Endangered
Species Act have major impact on environment
2). Has greatly increased public awareness
36. c. Formation of National Parks to preserve large
areas of wilderness has protected ecosystems
37. 3. A sustainable Earth- humans represent an
integral part of Earth’s ecosystems
a. We have ability to control how fast our
population grows, through controlling birth
rates
b. We can develop technology to produce
more food and produce less waste
c. We have ability to change our practices
and take action to protect and maintain
ecosystems
39. In the very distant past, most people
a. lived in small groups.
b. lived in permanent settlements.
c. did not gather plants.
d. did not hunt animals.
40. In the very distant past, most people
a. lived in small groups.
b. lived in permanent settlements.
c. did not gather plants.
d. did not hunt animals.
41. The arrival of Europeans in the Hawaiian Islands
changed the islands by introducing
a. ranching.
b. predators.
c. disease.
d. all of the above
42. The arrival of Europeans in the Hawaiian Islands
changed the islands by introducing
a. ranching.
b. predators.
c. disease.
d. all of the above
43. Early hunters and gatherers in North America are
responsible for
a. natural plant and animal populations.
b. a major extinction event of large animals.
c. producing new varieties of crops.
d. inventing technology such as manufactured
tools.
44. Early hunters and gatherers in North America are
responsible for
a. natural plant and animal populations.
b. a major extinction event of large animals.
c. producing new varieties of crops.
d. inventing technology such as manufactured
tools.
45. Which has become the most important source for
environmental change on Earth?
a. climate
b. energy
c. human activity
d. conservation biology
46. Which has become the most important source for
environmental change on Earth?
a. climate
b. energy
c. human activity
d. conservation biology
47. Land is a resource that provides
a. space for cities and suburbs.
b. raw materials for industry.
c. soil for growing crops.
d. all of the above
48. Land is a resource that provides
a. space for cities and suburbs.
b. raw materials for industry.
c. soil for growing crops.
d. all of the above
49. An old-growth forest is
a. a renewable resource.
b. a nonrenewable resource.
c. a microclimate.
d. poor in biodiversity.
50. An old-growth forest is
a. a renewable resource.
b. a nonrenewable resource.
c. a microclimate.
d. poor in biodiversity.
51. Why are fossil fuels nonrenewable?
a. They require hundreds of millions of years to
form.
b. Their ecosystems change forever when they
are burned.
c. They are converted to carbon dioxide when
they are burned.
d. They exist in a very small supply.
52. Why are fossil fuels nonrenewable?
a. They require hundreds of millions of years
to form.
b. Their ecosystems change forever when they
are burned.
c. They are converted to carbon dioxide when
they are burned.
d. They exist in a very small supply.
53. The wearing away of surface soil by water and wind
is known as
a. deforestation.
b. desertification.
c. overgrazing.
d. soil erosion.
54. The wearing away of surface soil by water and wind
is known as
a. deforestation.
b. desertification.
c. overgrazing.
d. soil erosion.
55. Which is a way to limit deforestation?
a. use more wood products
b. plant and harvest trees on tree farms
c. increase carbon dioxide levels
d. fertilize the soil
56. Which is a way to limit deforestation?
a. use more wood products
b. plant and harvest trees on tree farms
c. increase carbon dioxide levels
d. fertilize the soil
57. The sulfur and nitrogen compounds in smog
combine with water to form
a. ozone.
b. ammonia.
c. acid rain.
d. chlorofluorocarbons.
58. When erosion and other factors cause soil to lose its
ability to hold water and other nutrients and to
support plant life, it is called
a. desertification.
b. depletion.
c. deforestation.
d. monoculture.
59. When erosion and other factors cause soil to lose its
ability to hold water and other nutrients and to
support plant life, it is called
a. desertification.
b. depletion.
c. deforestation.
d. monoculture.
60. Using renewable resources while ensuring that they
are not depleted is a practice called
a. sustainable use.
b. monoculture.
c. biological magnification.
d. renewable resource.
61. Using renewable resources while ensuring that they
are not depleted is a practice called
a. sustainable use.
b. monoculture.
c. biological magnification.
d. renewable resource.
62. An example of a sustainable-use practice is the use
of beneficial insects like ladybugs to
a. harm natural resources.
b. pollinate plants.
c. control unwanted pests.
d. eat unwanted plants.
63. An example of a sustainable-use practice is the use
of beneficial insects like ladybugs to
a. harm natural resources.
b. pollinate plants.
c. control unwanted pests.
d. eat unwanted plants.
64. The number of different species in the biosphere is
called
a. biodiversity.
b. ecosystem diversity.
c. genetic diversity.
d. species diversity.
65. The number of different species in the biosphere is
called
a. biodiversity.
b. ecosystem diversity.
c. genetic diversity.
d. species diversity.
66. Biodiversity is important to human society because it
a. is a natural resource.
b. provides food and goods.
c. provides medicines.
d. all of the above
67. Biodiversity is important to human society because it
a. is a natural resource.
b. provides food and goods.
c. provides medicines.
d. all of the above
68. The sum total of the genetically-based variety of
living organisms in the biosphere is called
a. species diversity.
b. sustainable use.
c. biodiversity.
d. conservation biology.
69. The sum total of the genetically-based variety of
living organisms in the biosphere is called
a. species diversity.
b. sustainable use.
c. biodiversity.
d. conservation biology.
70. What is meant by “a library of genetic information” in
reference to biodiversity?
a. The biodiversity of plants and animals is
interesting to read about.
b. Biodiversity contains genetic information upon
which humans can draw for future use.
c. Species provide humans with many useful
products to enhance our lives.
d. We have much to admire in the many forms of
life that surround us.
71. What is meant by “a library of genetic information” in
reference to biodiversity?
a. The biodiversity of plants and animals is
interesting to read about.
b. Biodiversity contains genetic information
upon which humans can draw for future use.
c. Species provide humans with many useful
products to enhance our lives.
d. We have much to admire in the many forms of
life that surround us.
72. Human well-being is tied to biodiversity because
a. humans love to look at beautiful things.
b. humans are part of the food webs and energy
cycles that a great variety of organisms share.
c. less biodiversity makes humans vulnerable to
extinction.
d. humans need a wide variety of animal species
for hunting and wildlife products.
73. Human well-being is tied to biodiversity because
a. humans love to look at beautiful things.
b. humans are part of the food webs and
energy cycles that a great variety of organisms
share.
c. less biodiversity makes humans vulnerable to
extinction.
d. humans need a wide variety of animal species
for hunting and wildlife products.
74. An endangered species is
a. a diseased animal.
b. a dangerous predator.
c. a group of organisms near extinction.
d. all organisms at the top of a food chain.
75. An endangered species is
a. a diseased animal.
b. a dangerous predator.
c. a group of organisms near extinction.
d. all organisms at the top of a food chain.
76. DDT was used to
a. fertilize soil.
b. kill insects.
c. form ozone.
d. feed animals.
77. DDT was used to
a. fertilize soil.
b. kill insects.
c. form ozone.
d. feed animals.
78. One property that makes DDT hazardous over the
long run is that DDT is
a. an insecticide.
b. a perfect pesticide.
c. nonbiodegradable.
d. deadly to herbivores.
79. One property that makes DDT hazardous over the
long run is that DDT is
a. an insecticide.
b. a perfect pesticide.
c. nonbiodegradable.
d. deadly to herbivores.
80. The first, and perhaps the best known, case of
biological magnification involved the pesticide
a. CFC.
b. UV.
c. CITES.
d. DDT.
81. The first, and perhaps the best known, case of
biological magnification involved the pesticide
a. CFC.
b. UV.
c. CITES.
d. DDT.
82. One of the greatest threats today to biological
diversity is
a. old-growth forests.
b. ozone depletion.
c. habitat destruction.
d. monoculture.
83. One of the greatest threats today to biological
diversity is
a. old-growth forests.
b. ozone depletion.
c. habitat destruction.
d. monoculture.
84. As DDT moves up the trophic levels in food chains,
or food webs, its concentration
a. stays the same.
b. increases.
c. decreases.
d. is eliminated.
85. As DDT moves up the trophic levels in food chains,
or food webs, its concentration
a. stays the same.
b. increases.
c. decreases.
d. is eliminated.
86. A major factor that negatively affects biodiversity is
a. biological magnification.
b. habitat fragmentation.
c. the green revolution.
d. nonrenewable energy.
87. A major factor that negatively affects biodiversity is
a. biological magnification.
b. habitat fragmentation.
c. the green revolution.
d. nonrenewable energy.
88. One of the goals of conservation biology is to
a. enforce environmental laws.
b. protect habitats.
c. manage natural resources.
d. all of the above
89. One of the goals of conservation biology is to
a. enforce environmental laws.
b. protect habitats.
c. manage natural resources.
d. all of the above
90. An ecological “hot spot” is an area where
a. habitats and species are healthy.
b. hunting is encouraged.
c. habitats and species are in the most danger of
extinction.
d. species diversity is too high.
91. An ecological “hot spot” is an area where
a. habitats and species are healthy.
b. hunting is encouraged.
c. habitats and species are in the most danger
of extinction.
d. species diversity is too high.
92. An increase in Earth’s average temperature from the
buildup of carbon dioxide and other gases in the
atmosphere is called
a. the greenhouse effect.
b. ozone depletion.
c. global warming.
d. particulate dispersal.
93. An increase in Earth’s average temperature from the
buildup of carbon dioxide and other gases in the
atmosphere is called
a. the greenhouse effect.
b. ozone depletion.
c. global warming.
d. particulate dispersal.
94. Some scientists think that global warming is
a. a natural variation in climate.
b. difficult to predict.
c. melting the polar ice caps.
d. all of the above
95. Some scientists think that global warming is
a. a natural variation in climate.
b. difficult to predict.
c. melting the polar ice caps.
d. all of the above
96. The major cause of ozone depletion is
a. nitric acid.
b. sulfuric acid.
c. chlorofluorocarbons.
d. ultraviolet light.
97. The major cause of ozone depletion is
a. nitric acid.
b. sulfuric acid.
c. chlorofluorocarbons.
d. ultraviolet light.