Ecology

2. it makes its own food
3. living or once living or made by something that was alive
5. one species benefits, the other is harmed
6. provides the energy for most food chains
7. the variety of life on Earth
9. all the members of one species living in an area
12. all of the different populations living in one area, not including abiotic factors
13. being dependent on others for some needs
14. it recycles dead organisms and waste
15. one species benefits, the other is nether hurt nor harmed
17. eats plants
18. mix of sand, clay, and silt
19. an environmental factor that is not alive, never lived, and not part of something living
21. one living thing
22. eats dead animals
24. the larger particles allow it to drain quickly

1. both species benefit from the relationship
4. all of the living and nonliving things that interact in an area
5. plants use water, sunlight, and carbon dioxide to make sugar and oxygen
8. made of weathered rock, minerals, humus, water, and air
10. how an ecosystem changes over time
11. eats both plants and animals
15. eats plants
16. a close relationship between species that benefits at least one of the species
20. tightly packed particles keep it from draining quickly
23. it must eat something to get energy