Across
- 1. Too many fish taken out before they can repopulate
- 3. The gradual caving in or sinking of an area of land due to over pumping
- 6. Prevention of excessive or wasteful use of a resource
- 7. All the land that drains into a specific body of water
- 10. Water located below the surface of the Earth found in aquifers
- 11. The ability to do something well and without wasting time, money or enery
- 12. This type of energy resource is replaceable by natural means. Ex: trees, wind
- 14. This type of energy resource takes millions of years to form from the remains of plants and animals. Ex: coal, oil, natural gas
- 15. Water that collects on the surface of the Earth. Found in rivers, ice, lakes, etc.
Down
- 2. Not having electricity
- 4. Too much algae grows and pulls oxygen from the water, killing fish
- 5. A boundary below ground that is saturated with water
- 8. A rock layer that stores groundwater and allows it to flow
- 9. A disorder of nutrition that results when a person does not consume enough of each of the nutrients that are needed by the human body
- 13. An area of land that is periodically underwater or whose soil contains a great deal of moisture