Chapter 2 Section 3
Review Page 42
A community of organisms and their abiotic
Explain why the entire biosphere is an
The biosphere sustains organisms that interact and
affect each other, providing an environment for all
Identify three factors that control the
balance of an ecosystem.
How matter and energy cycle through the
How ecosystems respond to change
How organisms in the ecosystem interact
Summarize how energy is transferred
between the sun and consumers in an
Plants photosynthesize the suns energy into
Consumers (animals) eat the plants
Higher-level consumers (bigger animals) eat the
Decomposers eat the consumers remains
Describe one way that ecosystems respond
to environmental change.
Ecosystems will generally respond to change in a
way that restores balance within the ecosystem
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.
Summarize the importance of good
stewardship of Earth’s resources.
Good stewardship helps maintain balance within
and between ecosystems, which helps to ensure
their health and productivity
Discuss two ways that the expansion of
urban area (cities) might be harmful to
Removes vegetation that helps hold topsoil in
place, otherwise leading to soil erosion
Water pollution from street runoff effects the water
Animals may flee, disturbing neighboring
The End ???