Ecology Review

2. eats meat
3. provides energy for food chains
4. a close relationship between species that benefits at least one of the species
6. makes its own food
8. the variety of life (or species) on Earth
10. used by plants
13. used by animals
15. factor living or once living (and now dead)or made by something that was alive
17. one living thing
19. eats plants

1. eats plants and meat
2. all of the different populations living in an area (no abiotic factors)
5. all of the living and nonliving things that interact in an area
7. made up of weathered rock, minerals, humus, water, and air
9. being dependent on others for some needs, being mutually dependent on each other
11. how an ecosystem changes over time
12. all the members of one species living in an area
14. eats dead animals
16. factor an enviromental factor that is not alive, never lived, and was not part of something living
18. must eat something for energy