The practice of allowing renewable resources time to recover and replenish

A rate of change that increases more and more rapidly over time

All the members of one species living in the same area

The number of deaths per 1,000 individuals in a certain period of time

A condition in which the number of humans grows beyond what the available resources can support

The practice of using less of a resource so that it can last longer

A specific source of population that can be identified

Pollutants that are released into air

Rain or another form of precipitation that is more acid than normal, caused by the release of molecules of sulfur dioxide and nitrogen oxide into the air

A widely spread source of pollution that is difficult to link to a specific point of origin

A form of oxygen that has three oxygen atoms in each molecule instead of the usual two; toxic to organisms where it forms near the Earth's surface

The removal of forests to use the land for other reasons

Using a resource in ways that maintain it at a certain quality for a certain period of time

The process by which water, ice, wind, or gravity moves weathered particles of rock and soil

The advance of desert-like conditions into areas that previously were fertile; caused by overfarming, overgrazing, drought, and climate change

A type of pollution caused by factories and power plants releasing superheated water into bodies of water

Small, solid pieces of material that come from rocks or the remains of organisms; earth materials deposited by erosion

The water and human wastes that are washed down sinks, toilets, and showers