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Chapter 2 Section 3 Review Page 42

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Chapter 2 Section 3 Review Page 42 Ecology 1 Define ecosystem: A community of organisms and their abiotic environment. 2 Explain why the entire biosphere is an ecosystem. – PowerPoint PPT presentation

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Title: Chapter 2 Section 3 Review Page 42


1
Chapter 2 Section 3 Review Page 42
  • Ecology

2
1
  • Define ecosystem
  • A community of organisms and their abiotic
    environment.

3
2
  • Explain why the entire biosphere is an ecosystem.
  • The biosphere sustains organisms that interact
    and affect each other, providing an environment
    for all of them.

4
3
  • Identify three factors that control the balance
    of an ecosystem.
  • How matter and energy cycle through the ecosystem
  • How ecosystems respond to change
  • How organisms in the ecosystem interact

5
4
  • Summarize how energy is transferred between the
    sun and consumers in an ecosystem.
  • Plants photosynthesize the suns energy into
    carbohydrates
  • Consumers (animals) eat the plants
  • Higher-level consumers (bigger animals) eat the
    smaller animals
  • Decomposers eat the consumers remains

6
5
  • Describe one way that ecosystems respond to
    environmental change.
  • Ecosystems will generally respond to change in a
    way that restores balance within the ecosystem

7
6
  • Compare a food chain with a food web.
  • Food chain A sequence in which an organism is
    consumed by another organism
  • Food web MORE COMPLEX Several organisms feed
    upon one type of organism, which are consumed by
    still other organisms that compete with each
    other.

8
7
  • Summarize the importance of good stewardship of
    Earths resources.
  • Good stewardship helps maintain balance within
    and between ecosystems, which helps to ensure
    their health and productivity

9
8
  • Discuss two ways that the expansion of urban area
    (cities) might be harmful to nearby ecosystems.
  • Removes vegetation that helps hold topsoil in
    place, otherwise leading to soil erosion
  • Water pollution from street runoff effects the
    water supplies
  • Animals may flee, disturbing neighboring
    ecosystems

10
The End ???
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