GLOSSARY

Abiotic Nonliving; often used to refer to the nonliving components of an ecosystem (such as climate and temperature).

Abundance The number of a given species within an ecosystem; an abundant species is strongly represented within the wider population.

Acid rain Any form of precipitation with high levels of acidity, causing damage to the environment; may occur naturally or as a result of human activity.

Anthropogenic Originating in, or influenced by, human activity.

Apex predator A predator that is not prey for any other species.

Atmosphere The layer of gases surrounding Earth. It also protects organisms from ultraviolet radition.

Autotroph A producer; an organism that makes its own food from sources such as light, water, and ...

Get The Ecology Book now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.