enviornmental science

5. an animal which feeds on dead organic material, especially plant detritus.
7. the total quantity or weight of organisms in a given area or volume:
10. an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
13. consumer Obtains its nutrition by eating primary consumers and secondary consumer
14. that utilizes energy from light to synthesize organic molecules.
15. the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight. Compare with photosynthesis
17. the action or process of precipitating a substance from a solution.
18. (chiefly of bacteria) remove the nitrates or nitrites from (soil, air, or water) by chemical reduction:
19. a biological community of interacting organisms and their physical environment:

1. plankton consisting of microscopic plants.
2. consumer organism that eats primary consumers for energy
3. an organism that produces organic compounds from simple substances such as water and carbon dioxide; an autotroph:
4. ratio between the output of production and the input of production factors/means.
6. an animal that feeds on plants:
7. relating to or resulting from living things, especially in their ecological relations:
8. an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide. Compare with heterotroph
9. a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances
11. physical rather than biological; not derived from living organisms:
12. the conversion of organic nitrogen into ammonia or ammonium ions by decomposers
16. the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers.