Water conservation

2. area of land that catches rain and snow and drains or seeps into a marsh, stream, river, lake or groundwater.
6. the practice of cultivating the land or raising stock
9. the presence of any substance or material that may cause a harmful effect on human, animal and plant
10. a large natural or artificial lake used as a source of water supply.
11. the action of conserving something, in particular.
12. generally occurs in the atmosphere when warm air rises, cools and looses its capacity to hold water vapor.
16. the action or process of filtering something.
17. the process of drilling down into the earth before a high-pressure water mixture is directed at the rock to release the gas inside.

1. waste water and excrement conveyed in sewers
3. can be liquid, vapor, or ice
4. unwanted pollution of something by another substance
5. Also known as Confined Agricultural Feeding Operation
7. an excavation or structure created in the ground by digging, driving, boring, or drilling to access groundwater in underground aquifers
8. below-average precipitation in a given region, resulting in prolonged shortages in its water supply, whether atmospheric, surface water or ground water.
13. process by which water changes from a liquid to a gas or vapor.
14. a large mass of ice floating at sea; usually broken off of a polar glacier
15. warming a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.