Ecology crossword

2. group of ecosystems that share similar climates and typical organisms
6. when phosphorus moves between the soil and plants which are eaten by the animals, used by them, and then are delivered back through waste
8. nutrients whose supply limits productivity
12. series of steps in which organisms transfer energy by eating and being eaten
13. network of feeding interactions
14. group of similar organisms that can breed and produce fertile offspring
16. when plants use CO2 in the process of photosynthesis to make sugar and oxygen
17. any living part of the environment with which an organism might interact
19. biological, geological, chemical/physical, and human activity
20. study of interactions amount organisms

1. non-living parts if the environment
3. group of individuals that belong to the same species and live in the same area
4. a step in a food chain or web
5. chemical substances that an organism needs to sustain life
7. when animal waste decay to create ammonia and nitrate products rich in nitrogen, and useful for plants to use again
9. assemblage of different populations that live together in a defined area
10. all the organisms that live in a place together with their physical environment
11. stages include precipitation, evaporation, and then condensation
15. consists of all life on earth and all plants of the earth in which life exists
18. amount of living tissue within a given trophic level