Mrs. Sims crossword

4. Process by which plants convert sunlight into energy (14 letters)
8. The hierarchical stages in a food chain, based on feeding relationships (13 letters)
9. The process of converting organic nitrogen into ammonia in the soil (14 letters)
12. The total mass of living organisms in a given area or ecosystem (7 letters)
14. Relating to living organisms in an ecosystem (6 letters)
16. An animal that feeds mainly on plants (9 letters)
17. Organisms that obtain food by consuming other living things (12 letters)
19. Organisms that make their own food, typically through photosynthesis (10 letters)
20. An organism that eats producers (plants) in an ecosystem (15 letters)

1. Organism that obtains energy by consuming chemical compounds (10 letters)
2. Any form of water, such as rain or snow, that falls from the atmosphere to the Earth's surface (12 letters)
3. Microscopic plants that float in water and perform photosynthesis (12 letters)
5. An animal that eats both plants and meat (8 letters)
6. The process by which water vapor cools and changes into liquid form (11 letters)
7. Organisms that break down dead material and recycle nutrients (11 letters)
10. Process by which certain organisms produce food using chemical reactions, not sunlight (14 letters)
11. An animal that primarily eats meat (9 letters)
13. An organism that feeds on dead organic matter (10 letters)
15. Describing non-living factors in an environment (7 letters)
18. The process by which water changes from liquid to vapor due to heat (10 letters)