Ecology Crossword

2. that part of earth where organisms can live
6. a ____ community is stable and contains many types of organisms
7. something harmful to organisms that is added to an environment
8. living factors in an environment
10. ___ rain contains sulfuric or nitric acid
12. ecosystem covering large area, for example, an ocean or a desert
15. resources Earth cannot replace, such as minerals
17. an _____ is all the interactions among the populations of a community and its nonliving parts

1. used by organisms to live: water, air, sunlight are examples
3. ____species have few members left
4. all organisms ___ with living and nonliving things in their environment
5. fuel formed long ago from remains of organisms
9. various populations living in one area
11. number of an organism living in a set area
13. place an organism lives
14. process by which a community changes over time
16. study of interactions among living and nonliving parts of an environment