Biology

The ability to adapt is a fundamental property of life and constitutes a basic difference between living and nonliving matter.

The spread of an invasive species into native plant communities and causing environmental harm by developing self-sustaining populations and disrupting the structure and functioning of the system.

In ecology, the interaction between two or more organisms, or groups of organisms, that use a common resource in short supply.

Ecology is the study of the relationships of organisms to their physical environment and to one another.

In ecology, a unit consisting of living organisms and the environment that they live in.

Any plant or animal species whose ability to survive and reproduce has been jeopardized by human activities.

In biology, the complete disappearance of a species from the planet.

In ecology, a sequence showing the feeding relationships between organisms in a habitat or ecosystem.

In ecology, the localized environment in which an organism lives, and which provides for all (or almost all) of its needs.

Measure of the variety of the Earth's animal, plant, and microbial species, of genetic differences within species, and of the ecosystems that support those species.

In the life sciences, action taken to protect and preserve the natural world, usually from pollution, overexploitation, and other harmful features of human activity.

Any plant or animal species whose ability to survive and reproduce has been jeopardized by human activities.

Movement to protect the quality and continuity of life through conservation of natural resources, prevention of pollution, and control of land use.

Contamination of the environment as a result of human activities. The term pollution refers primarily to the fouling of air, water, and land by wastes (see air pollution; water pollution; solid waste).

[smoke+fog], dense, visible air pollution. Smog is commonly of two types.

An area of land or of land and water set aside and maintained, usually by government or private organization, for the preservation and protection of one or more species of wildlife.