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Ecology

Contributors in Ecology

Ecology

chemosynthesis

Biology; Ecology

The chemical conversion of inorganic compounds found in an autotrophic organism's surroundings into food for it. Compare Photosynthesis.

bitumen

Biology; Ecology

Also known as asphalt or tar. Bitumen is a black, oily, viscous material that is a naturally produced from decomposed organic materials.

annuals

Biology; Ecology

Pioneer plants which grow, flourish, and die in one season. Their seeds often germinate during the following wet season. See Perennials.

phosphorus cycle

Biology; Ecology

Cyclic movement of phosphorus from environment to organism and back, starting with phosphate rock dissolved by water into plant roots.

levee

Biology; Ecology

An embankment that works as a dike. Levees built to containn floods can actually accelerate floodwaters by narrowing natural channels.

orthographic uplift

Biology; Ecology

The rise of air masses bumping into a mountain range. Often results in rain on the windward side and a dry rain shadow on the lee side.

out of Africa

Biology; Ecology

The commonly accepted evolutionary hypothesis that all humans emigrated from Africa, a continent that hosted several hominid species.

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