Environmental Science Crossword Puzzle

6. Organism that breaks down organic material such as dead organisms.
12. Organism that cannot produce its own food.
13. The action or process of precipitating a substance from a solution.
15. The evaporation of water from plants.
16. Non-Living components or attributes of an ecosystem.
18. Is a graphical representation, showing the flow of energy at each trophic level in an ecosystem.
19. The process of turning from liquid into vapor.
20. Biological conversion of one or more carbon-containing molecules.

1. System that environments and their organisms form through their interaction.
2. Group of photosynthetic bacteria that obtain energy through photosynthesis.
3. Conversion of organic nitrogen into ammonia or ammonium ions by decomposers.
4. The absorption and digestion of food or nutrients by the body or any biological system.
5. Organisms that can produce their own food, using materials from inorganic sources.
7. The total quantity or weight of organisms in a given area or volume.
8. Capacity for doing work.
9. Microscopic photosynthesizing organism.
10. Form of consumption in which an organism principally eats autotrophs such as plants, algae and photosynthesizing bacteria.
11. (Chiefly of bacteria) remove the nitrates or nitrites from (soil, air, or water) by chemical reduction.
14. Are organisms that use energy from the sun, chemical reactions or geothermal vents to create organic molecules from carbon dioxide.
17. All the living organisms present in an ecosystem, such as plants, animals, fungi and bacteria.