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  • 1. Resources
  • 2. The Earth’s Resources
    • Natural resource is any part of the natural environment that is used by humans for their benefit.
    • Ex. Soil, water, crops, wildlife, oil, gas, minerals..
    • Renewable resources are any natural resource that is replaced or recycled by natural processes.
    • Ex. Plants, animals, sunlight….
  • 3.
    • Nonrenewable resources are available only in limited amounts and is not replaced or recycled by natural processes.
    • Ex. Metals (iron, aluminum, silver), minerals (phosphorus)……
    • Fossil fuels , substances made up of the remains of organisms that have been buried underground for millions of years, are considered nonrenewable resources.
    • Humans are consuming them far faster than they can be replaced.
    • Ex. Oil, natural gas, coal....
  • 4.
    • Animals and plants are natural resources, but sometimes the populations need help from us.
    • When a population of a species begins declining rapidly, it is considered to be a threatened species .
    • Ex. African elephants
    • 1970- 3,000,000
    • 1990- 700,000
    • Recently the population is thought to be about 690,000.
  • 5. African Elephant African elephants are killed for their ivory tusks. The ivory is used to make trinkets.
  • 6.
    • If a population of a species continues to decline so rapidly that extinction is possible, it is considered to be an endangered species .
    • Ex. Florida panther, California condor, black rhino.
    • There are programs designed to save these species and laws that protect them in the wild.
    • Sometimes organisms can’t be saved and become extinct , where there is a total disappearance of an entire species.
    • Ex. Passenger pigeons, Dodo bird, Carribbean monk seal.
  • 7.
    • California Condor
    • In 1987- 22 individuals
    • All were taken into captivity and bred
    • Currently there are about 300
    • Still critically endangered!!!
    • Florida Panther
    • The numbers are on the rise due to a breeding program with a Puma species from TX.
    • Black Rhinoceros
    • In 2004, only 2,410 rhinos remained.
  • 8.
    • Caribbean monk seal was the only seal native to the Caribbean area.
    • Became extinct in 1950’s.
    • It was not afraid of humans, who killed the seals for oil.
    • It is possible that some still exist, but have not been seen since 1952.
    • The Dodo Bird went extinct in the 1600’s.
    • It was flightless and lived on an island. Humans arrived on that island and ate the birds. Humans also destroyed the forests where the birds made their homes. Humans brought pigs, dogs, and rats that ate the eggs of the Dodo.
  • 9. Which of the following is a natural resource?
    • Water
    • Plastic
    • Polymers
    • Polyester
    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 20
  • 10. Which of these is a nonrenewable resource?
    • Trees
    • Water
    • Oil
    • Weeds
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 11. A population of species that is declining rapidly is a __________ species.
    • Endangered Species
    • Threatened Species
    • Extinct Species
    • Troubled Species
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 12. Which of the following is extinct?
    • Florida Panther
    • Black Rhino
    • African Elephant
    • Dodo Bird
    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 20
  • 13. Review Questions
    • Identify a minimum of 3 reasons that explain why organisms go extinct.
    • Explain why an animal or plant would be considered to be threatened.
    • Explain the difference between a species that is threatened and a species that is endangered.
    • Using one of the examples given in class for endangered or threatened species, explain how humans are influencing the population decline for that specific species.
  • 14. Maintaining a Natural Balance
    • All living organisms produce waste, but it is usually recycled by natural processes.
    • But Humans are producing too much waste that can not be broken down.
    • Pollution is the contamination of any part of the environment (air, water, land) by an excess of waste materials.
    • Ex. Cattle farms produce more waste than the decomposers in the soil can break down, so it is washed away by rainfall into nearby water sources.
  • 15. Air pollution
    • Volcanic eruptions and forest fires are sources of air pollution, but the biggest source of air pollution is burning fossil fuels.
    • Smoke released by burning fossil fuel contains gases and particulates , which are solid particles of soot that are harmful.
    • Some major air pollutants are carbon monoxide, carbon dioxide, ect….
    • Smog is a form of air pollution that hangs over many of the world’s large cities.
    • It contains particulates, sulfur dioxide, and other chemicals.
  • 16. DAYTIME!!!! Smog in Beijing, China
  • 17. Ozone Depletion
    • The ozone layer prevents living organisms from receiving lethal doses of ultraviolet radiation (UV rays).
    • Ozone is 3 oxygen molecules
    • Problem : the ozone layer is becoming thinner!
    • CFC’s (chemicals that are man-made) deplete the ozone layer, and were eliminated from most products.
  • 18. Greenhouse Effect
    • The greenhouse effect is the process of heat retention by atmospheric gases, such as CO 2 .
    • Without this, all of the sun’s energy would go back into space and Earth would be too cold for living things to survive.
    • Problem : we are putting a lot of extra greenhouse gasses into the atmosphere by burning fossil fuels.
    • This leads to more heat being trapped in our atmosphere.
    • Global Warming!!!!
  • 19.  
  • 20. What is the biggest source of air pollution?
    • Volcanic eruptions
    • Forest Fires
    • Decomposition
    • Burning Fossil Fuels
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 21. Smog contains particulates and _______.
    • Carbon Monoxide
    • Carbon Dioxide
    • Sulfur Monoxide
    • Sulfur Dioxide
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 22. The ozone layer allows for life on Earth by:
    • Trapping the sun’s warmth
    • Blocking UV light
    • Blocking excess heat
    • Releasing CFCs
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 23. What is causing the depletion of the ozone layer?
    • CFCs
    • CO 2
    • SO 2
    • UV light
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 24. The greenhouse effect allows for life on Earth by:
    • Trapping the sun’s warmth
    • Blocking UV light
    • Blocking excess heat
    • Releasing CFCs
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 25. What is causing problems with the greenhouse effect?
    • CFCs
    • CO 2 emissions
    • Water Pollution
    • UV light
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 26. Water Pollution
    • When water molecules come into contact with air pollutants, it results in acid precipitation.
    • Acid precipitation is rain or snow that is more acidic than unpolluted rainwater.
    • Acid rain can cause soil to become less fertile and can lead to the death of trees, especially conifers.
    • Acid rain can also fall into lakes, causing the pH of the lake to become more acidic, disrupting the entire water ecosystem.
  • 27. Pine trees killed by acid rain.
  • 28.
    • Fertilizers from nearby farms can be washed into water sources, which pollutes them, causing algae to grow out of control, leading to an “algal bloom”.
    • Sewage and industrial waste can get into rivers, negatively affecting the drinking water (leading to waterborne diseases such as dysentery and cholera) and organisms living in the water.
    • Industries can use water to cool machinery, and the hot water is then released back into the environment, causing problems for organisms in that area.
  • 29. Algal Bloom in a pond Water pollution is a problem in highly populated countries like here in China.
  • 30. Groundwater Pollution
    • Freshwater that is found underground is called groundwater .
    • Drinking water largely comes from groundwater sources.
    • Pollutants from leaking storage containers or agricultural runoff also travels through the soil, eventually reaching and contaminating the groundwater.
    • Another problem is that if we remove large amounts of water from underground, the water level goes down, and the soil above it can collapse, leaving a giant sinkhole.
  • 31.  
  • 32. Land Pollution
    • Humans produce billions of tons of garbage every year.
    • Waste is considered to be……
    • Biodegradable- waste that can be broken down by natural processes.
    • Ex. Food, wood products, animal waste, dead leaves
    • Nonbiodegradable- waste that can not be broken down and exist in the environment for a long time.
    • Ex. Plastic, ratioactive residues, pesticides
    • Trash is either burned (which releases harmful gases into the atmosphere) or it is buried in landfills (where it does not decompose well).
  • 33. Landfill Land Pollution
  • 34.  
  • 35. What can we do to help?
    • Recycle!!!!
    • Preservation- the act of keeping an area or organism from harm or destruction.
    • Preserves in Africa to keep poachers away from Elephant and Rhino herds.
    • Recovery programs help some organisms from becoming extinct.
    • Conservation- planned management of a natural area to prevent exploitation or destruction.
    • Ex. National parks
  • 36. Yosemite National Park
  • 37. Hot sulfur springs Yellowstone National Park Old Faithful Geyser
  • 38. Why is acid rain a ecological problem?
    • It makes soil less fertile
    • It raises pH of lakes
    • Both 1 & 2
    • None of the above
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 39. How can farming harm water sources?
    • Depletes the soil
    • Uses too many resources
    • Runoff causes algal blooms
    • Farmers pollute
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 40. What is freshwater that is found underground called?
    • Runoff
    • Water table
    • Transpiration
    • Groundwater
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 41. Which types of waste can be broken down by natural processes?
    • Biodegradable
    • Nonbiodegradable
    • Plastics
    • Polymers
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 42. What is the act of keeping an area or organism from harm or destruction?
    • Conservation
    • Preservation
    • Recycling
    • Rescuing
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
  • 43. What is the planned management of a natural area to prevent exploitation or destruction.?
    • Conservation
    • Preservation
    • Recycling
    • Rescuing
    20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30