1.
Contamination of Earth's land, water, or air.________________________
2.
A specific source of pollution that can be identified.________________________
3.
A widely spread source of pollution that is difficult to link to a specific point of origin.________________________
4.
Pollutants that are released into the air.________________________
5.
A form of oxygen that has three oxygen atoms in each molecule instead of the usual two; toxic to organisms where it forms near Earth's surface.________________________
6.
Rain or another form of precipitation that is more acidic than normal, caused by the release of molecules of sulfur dioxide and nitrogen oxide into the air.________________________
7.
Anything naturally occurring in the environment that humans use.________________________
8.
A resource that is either always available or is naturally replaced in a relatively short time.________________________
9.
A natural resource that is not replaced in a useful time frame.________________________
10.
The removal of forests to use the land for other reasons.________________________
11.
The process by which water, ice, wind, or gravity moves weathered particles of rock and soil.________________________
12.
The advance of desert-like conditions into areas that previously were fertile; caused by overfarming, overgrazing, drought, and climate change.________________________
13.
Using a resource in ways that maintain it in a certain quantity or amount for a certain period of time.________________________
14.
The water and human wastes that are washed down sinks, toilets, and showers.________________________
15.
Small, solid pieces of material that come from rocks or the remains of organisms; earth materials deposited by erosion.________________________
16.
A type of pollution caused by factories and power plants releasing superheated water into bodies of water.________________________
