STAAR Review- Organisms and Environment

4. The place that an organism lives
7. the relationship between species that is only beneficial to one but does not affect the other
8. changes that occur quickly in an ecosystem
11. the first step of ecological succession on barren rocky land
14. the variety of life. key to preservation of a healthy world
15. all the biotic and abiotic components that interact within an area at once.
16. the balance of an ecosystem
17. the rise in Earth's temperature and its effects
18. the draining away of water from a surface into a body of water
19. when two species both benefit from a relationship

1. the interaction between species that share limited resources
2. an area of land that separates water flowing to different bodies of water
3. changes slowly occur in an ecosystem
5. the variation of species in an ecosystem
6. organisms that are more adapted to their environment survive and pass on the gene
9. the change in a community over time
10. succession occurring after a major disturbance but intact soil
11. the relationship between two species where one lives on or in the other at its considerable expense
12. non-living things
13. living things