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Eco chapter 2 n

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  • 1. Chapter 2 Sustaining What the Environment Provides
    • Objectives
      • Described how the environment sustains life and the role of sustainable resource use
      • Name and explain the basic life needs that the environment provides for living organisms
      • Identify the three roles of humans in the environment
      • Describe the environment as home, including ecosystems, habitats, and food webs
  • 2. Terms
    • Conservation
    • Ecosystem
    • Food
    • Food chain
    • Food web
    • Habitat
    • Hypothermia
    • Nutrient
    • Quality of life
    • Respiration
    • Shelter
    • Space
    • Sustainable agriculture
    • Sustainable development
    • Sustainable resource use
    • Sustaining life
    • Territory
  • 3. Ask Yourself
    • What do I need to live?
    • How does the environment help provide these needs?
  • 4. Sustaining Life
    • Organism require certain things to live that provided by the environment
    • Conditions are no longer provided, life may not be possible
    • Using resources so they last a long time
    • A person should use no more than is needed
    • No resource should be wasted
  • 5. Sustainable Resource Use
    • Is using resources so they last a long time
    • The resource is renewed, reused, and recycled as best as possible
    • Proper conservation practices are used
  • 6. Sustainable Development
    • Is to assure the best possible future
    • All development is carried out for the best long-term benefits to society
  • 7. Sustainable Agriculture
    • Involves using practices that assure the future ability to produce crop and livestock
    • Soil conservation practices are used to prevent loss and damage
    • Pesticides are used only as need and as approved
    • Wastes are properly disposed of and are not dumped on the land nor in streams
    • Area are provided for wildlife to live and grow
  • 8. Having Good Quality of Life
    • Quality of life is having a good environment in which to live
    • Environment provides for the needs of people
    • Example,they have clean air to breathe, unpolluted water to drink, and feel safe
  • 9. Life Needs
    • The major needs of living things are:
      • Food
      • Water
      • Air
      • Space
      • Protection or shelter
  • 10. Food
    • Food is nourishment and is need for energy and growth
    • Organisms obtain nutrients from food substances
    • Common nutrients are proteins, carbohydrates, fat, minerals, and vitamins
    • Damage to environment can result in food that is contaminated with dangerous materials
  • 11. Water
    • All living things required water to survive
    • Most nutrients dissolve in water to diffuse into the cells
    • If people do not get sufficient water, they become dehydrated
    • Dehydration is the removal of water from cells and organs
    • People get sick and required fluids back into system
  • 12. Air
    • Air is a mixture of gases that includes oxygen
    • Aerobic means to live where free oxygen is available
    • Anaerobic means to live where is not free oxygen
    • Human live in an environment with about 21 percent oxygen in the air
  • 13. Space
    • Space is the area around an organism that it uses for living
    • Space includes air, area for activity, food sources, and places for shelter and protection
    • Territory is the area an animal uses and protects as its own
  • 14. Shelter and Protection
    • Organisms sometimes need protection from the environment
    • Humans use clothing and housing to protect themselves from the weather
    • Greenhouse are used to provide a controlled environment for growing plants
  • 15. Roles of Humans
    • Humans have three roles:
    • Humans are resource users
    • Humans can make decisions about resource use
    • Humans can prevent waste
  • 16. The Environment as Home
  • 17. Ecosystem
    • An ecosystem is all of the parts of a particular environment
    • It is a community of living organisms and nonliving materials
    • Ecosystems can be large or small
    • Ecosystems are continually changing
  • 18. Habitat
    • Habitat is the physical area where an organism naturally lives
    • It is the proper arrangement of four essential elements: food, water, shelter, and space
  • 19. Energy Transfer
    • Organisms must have energy to move about and carry out life functions
    • All of the energy in an ecosystem originates with the sun
    • Plants use sunlight and the process of photosynthesis to make food
  • 20. Food Chain
    • Energy is transferred from one organism to another in the food chain
  • 21. Food Web
    • A food web is all the interconnected food chains of an ecosystem
    • A plant may be eaten by more than one animal
    • The animals may be the prey of other animals
    • Finally, plants and animals die and their remains decay and are returned as nutrients to the soil
  • 22. Tests
    • How is quality of life affected when resources are damaged?
    • What are the major life needs of living organisms?
    • Why are these important?
    • What are the roles of humans in relating to the quality of the environment?
    • What relationships exist among ecosystems, habitats, and food chains?

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