study guide

2. must eat something for energy
6. eats plants
8. eats plants
9. destroys food/shelter causing animals to die or move away kills animals causing the population to drop
12. eats both plants and animals
13. living or once living (and now dead)or made by something that was alive
14. animals breath in oxegyen and produce carbon dioxide/ animals eat plants
15. grassland, shrub lands, pine forest, hardwood forest
17. occurs after a forest fire (where soil is left)
20. one living thing
21. recycles dead organisms annd waste
22. all the members of one speices living in an area
24. if there isn't enough food, animals starve and die causing the population to drop
25. provides energy for food chains

1. all of the different populations living in an area (no abiotic factors)
3. the variety of life (or species)on Earth
4. all of the living and non living things that interact in an area
5. the cycle of which plants use to create sugar and oxgyen
7. eats meat
8. eats a herbivore
10. an enviormental factor that is not alive
11. occurs after a valcano eruption forms new land (where there is no soil)
16. makes its own food
17. eats dead animals
18. take in nitrogen from the air and change it into a form that can be used by plants
19. being dependent on other for some needs, being mutually dependent on each other
23. shows the amount of energy that moves from one energy level to the next.