The place where an organism usually lives.

Any natural material or energy source that is used by humans, such as water, petroleum, minerals, forests, and materials.

Widespread injury, death, and property damage caused by a natural hazard.

An unwanted change in the environment caused by substances or forms of energy.

A resource that forms at a rate that is much slower than the rate at which the resource is comsumed.

The warming of the surface and lower atmosphere of Earth that occurs when water vapor, carbon dioxide, and other gases absorb and reradiated energy.

The average consumption per person within a population.

A natural resource that can be replaced at the same rate at which the resource is consumed.

Pollution that comes from many sources rather than from a single specific site.

A group of organisms of the same species that live in a specific geographical area.

Describes a species that has died out completely.

Pollution that comes from a specific site.

A natural process or phenomenon that may cause widespread injury, death, and property damage.