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Understanding Our Environment

Understanding Our Environment






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    Understanding Our Environment Understanding Our Environment Presentation Transcript

    • Understanding Our Environment Ecology I Mr. Nettles
    • Class Motto
      • Discipline fuels character!
      • Character builds hope!
      • Hope assures your future!
    • Agenda- Monday, January 23, 2012
      • Warm Up
      • “ Understanding Our Environment”
      • Wrap Up (LIA)
      • A-Plus
    • Today’s Objectives
      • Define environmental science, ecology, agriculture, natural resource, pollution, and biodiversity
      • Compare ecology and environmental science.
      • List the five major fields of study that contribute to environmental science.
      • Describe the major environmental effects of hunter-gatherers, the agricultural revolution, and the Industrial Revolution.
      • Classify environmental problems into three major categories.
    • Warm Up (Jan. 23)
      • How do you define the term environment ?
      • Are humans part of the environment ?
      • How can science help us understand and solve environmental problems ?
    • What is Environmental Science?
      • Environmental Science = the study of how humans interact with the environment
      • The environment includes the natural world, the complex web of relationships between living things, and everything produced by humans .
    • The Goals of Environmental Science
      • A major goal of environmental science is to understand and solve environmental problems.
      • To accomplish this goal, environmental scientists study two main types of interactions between humans and their environmen t:
        • The use of natural resources.
        • How our actions change our environment.
    • Key Question
      • How do ecology and environmental science differ?
        • Remember that ecology is the study of the relationships that living organisms have with each other and their natural environment.
      • Answer : Ecology involves the study of ALL living things interacting with the environment whereas Environmental Science involves ONLY humans interacting with the environment.
    • 5 Major Fields of Study that Contribute to Environmental Science
      • Biology - the study of living organisms
      • Earth Science – the study of Earth’s nonliving systems and the planet as a whole
      • Physics – the study of matter and energy
    • 5 Major Fields of Study that Contribute to Environmental Science
      • Chemistry – the study of chemicals and their interactions.
      • Social Sciences – the study of human populations
    • Stages of Our Environment Through Time
      • Hunter-Gatherers
        • Hunter-Gathers are the earliest group of people who obtained food by collecting plants, hunting, and scavenging the remains of animals.
        • They affected the environment by:
          • overhunting large game animals, which led to the extinction of animals such as the giant bison and saber-toothed tiger
          • spreading different plant species around the world by traveling from place to place
    • Stages of Our Environment Through Time
      • The Agricultural Revolution
        • Agriculture – the practice of growing, breeding, and caring for plants and animals that are used for food, clothing, housing, and transportation.
        • Began in many different parts of the world 10,000 years ago
        • Started with hunter-gatherers planting seeds from plants they gathered and breeding animals from their local environments
        • Developing farmlands out of rainforests caused harm to the environment through soil loss, floods, and water shortage.
    • Stages of Our Environment Through Time
      • The Industrial Revolution
        • Involved a shift from energy sources such as animal muscle and running water to fossil fuels such as coal and oil
        • Made producing food and goods much faster and less expensive
        • Improved the quality of life for people in ways such as the invention of the light bulb and improvement of medical care
        • Produced environmental problems such as pollution and habitat loss
    • 3 Main Environmental Problems
      • Resource Depletion
        • Natural Resource – any natural material that is used by humans
          • Renewable Resources can be replace quickly by a natural process . Examples include water, air, soil, and trees .
          • Nonrenewable Resources are used at a much faster rate than they are made . Examples are minerals and fossil fuels.
        • Resources become depleted when a large amount of them become used up.
    • 3 Main Environmental Problems
      • Pollution:
        • Pollution – an undesired change in air, water, or soil that badly affects the health, survival, or activities of living things.
          • Biodegradable Pollutants can be broken down by natural processes . An example is human sewage .
          • Non-degradable Pollutants are not broken down easily and can build up to dangerous toxic levels in the environment . Examples are lead and mercury.
        • Most pollution today is caused by human activity.
    • 3 Main Environmental Problems
      • Loss of Biodiversity:
        • Biodiversity – the number and variety of species that live in an area.
        • Much of the Earth’s biodiversity has been loss due to extinction .
    • Wrap Up (Jan. 23)
      • What was one fact that you Learned today?
      • What was the most Interesting thing about today’s class?
      • How can you Apply or use the information that you learned today?