Echology

3. factor living or once living
5. the variety of life
7. factor is an environmental factor that is not alive, never lived, and was not part of something living
9. makes it own food
12. eats meat
13. recycles dead organisms and wastes
17. a close relationship between species that benefits at least one of the species
19. main source of energy
20. one species benefits, the other is neither helped nor harmed
22. eats both plants and animals
23. all of the different populations living in an area (no abiotic factors)

1. eats plants
2. is an example of clay, sand and loam
4. is a cycle takes nitrogen from the air and change it into a form that can be used by plants
6. being dependent on others for some needs, me mutually dependent on each other
8. one living thing
10. one species benefits, the other is harmed in some way
11. pyramid shows the amount of energy that moves from one energy level to the next
14. all of the living and nonliving things that interact in an area
15. both species benefit from the relationship
16. eats dead animals
18. all members of one species living in an area
21. how an ecosystem changes over time
23. must eat something for energy