Ecosystem

1. deep sea vents may use chemical energy to make their own food.
4. living parts of the environment, such as plants and
8. food from water, carbon dioxide, and light energy from the sun or those
9. prepare soil for other more complex organisms to move in.
11. a community of living and nonliving parts of
12. soil, air and sunlight.
14. with grass and weeds growing in the first stages.
16. succession repopulation of an area that starts with bare soil left behind after a disturbance (natural or man-
17. variety of different species in an environment.

2. nonliving parts of the environment, such as rocks,
3. when two or more organisms try to get the
5. organisms such as plants that make their
6. succession stages of growth where initial colonization of an area starts with bare rocks, lichen break rock
7. web shows how matter and energy is transferred from one organism to another through feeding relationships.
9. environment.
10. resource.
11. transfer flow of energy passing from one organism to another in the environment. Energy is conserved in the system
13. water that flows across the land and into rivers and
15. though some leaves the organism as heat.