Across
- 2. Organisms that convert light energy to food are...
- 7. Organisms that feed on other organisms for energy are
- 9. If one factor in an ecosystem is affected, then ___ are.
- 13. Good quality air that is free from ______ is important.
- 14. The gradual washing or blowing away of soil is...
- 15. Natural resources can be used by humans to fulfill a...
- 16. Breaking down dead bodies is a job for...
Down
- 1. Preserving and protecting the natural environment is...
- 3. Vehicles and industry produce gases known as...
- 4. What obtains energy by feeding on dead bodies?
- 5. Substances washing off the surface into water sources is called...
- 6. Although water covers much of the earth it is not all...
- 8. Communities of interacting organisms are called...
- 10. Nonliving factors in an ecosystem are called...
- 11. The uppermost layer of soil where most plants grow is...
- 12. Wildlife includes animals and ________ life.