Using Resources

2. Air pollution can __________ the eyes and cause breathing problems.
5. ______ is an example of a nonrenewable resource.
9. A resource that cab be replaced within a human lifetime is a ____________ resource.
11. In _______ cropping, farmers plant strips of grass or clover between strips of crops.
12. When you _______, you use items again that might have been thrown out.
13. Homeowners can conserve water by having a ___________ instead of a lawn.
14. One water pollution source is __________.
17. A change in the environment that is harmful to living things.
18. The act of preserving or protecting natural resources.

1. Water pollution comes from _________ substances that enter the water cycle.
3. An example of a renewable resource is _______.
4. Crop __________ is a way for farmers to conserve soil.
6. Fertilizers and _____________ used by farmers and homeowners can pollute groundwater.
7. When you _________, you cut down on the amount of resources used.
8. When you __________, items are changed into a form that can be used again.
10. A resource that cannot be replaced within a human lifetime is a _______________ resource.
15. _____ rain is a type of air pollution that can kill fish when it falls into lakes, and it cam damage trees and other plants.
16. An example of soil conservation is _________ plowing.