Thursday, March 5, 2009

◘•◘abiotic◘•◘

Abiotic component

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In biology, abiotic components are non-living chemical and physical factors in the environment. Abiotic phenomena underlie all of biology. Abiotic factors, while generally downplayed, can have enormous impact on evolution. Things that were once living but now dead are usually considered biotic components rather than abiotic components (corpses, spilled blood). However, things that come from living things but are not living fit into biotic components or abiotic components depending upon the exact definition being used. Generally, things that were once living are considered part of the biotic component, but body waste such as feces, urine (and of course carbon dioxide, oxygen, and water from respiration) are considered part of the abiotic component since it was never living in that decomposed form.

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