Nature of Ecosystems

5. along with bacteria, it shows the food for larger decomposers
6. feed on other animals
8. sedimentary cycle that consists of the movement of phosphorus from rocks to soil & sea
11. exemplified by the phosphorus cycle
12. both land and aquatic organisms exchange carbon dioxide with the atmosphere
13. feed on plants and animals:example. Humans
15. with every transformation some energy is degraded
16. exemplified by the carbon and nitrogen cycles
17. shows the aboveground plant material
18. a source from which organisms do normally take chemicals, such as the atmosphere
21. through which chemicals move along food chains, perhaps never entering an exchange pool
22. a source normally unavailable to producers such as fossilized remains, rocks, and deep-sea sediments
23. a community along with its physical and chemical environment.

1. describes the continuous movement of water on and below the earths surface
2. feed on solely plants or algae
3. complicated relationships that exist in natural ecosystems
4. energy cannot be created or destroyed
7. producers take in inorganic nutrients from the environment
9. feed on other organisms
10. when producers absorb solar energy
14. feed on dead organic material in soil
19. make their own food
20. describes the continuous movement of nitrogen from atmosphere to the ground & sea