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- A carbon cycle is a sequence by which carbon
- circulates and is recycled through the
- natural world. The carbon element from carbon
- dioxide, released into the atmosphere by
- living things as a result of respiration, is
- taken up by plants during photosynthesis and
- converted into carbohydrates; the oxygen
- component is released back into the
- atmosphere.
- Today the carbon cycle is in danger of being
- disrupted by the increased consumption and
- burning of fossil fuels, and the burning of
- large tracts of tropical forests, as a result
- of which levels of carbon dioxide are
- building up in the atmosphere and probably
- contributing to the greenhouse effect.
-
- Subject by: Russell Webb
-