单词 | carbon cycle |
释义 | carbon cycle [`kär·bǝn ´sī·kǝl] GEOCHEMISTRY The cycle of carbon in the biosphere, in which plants convert carbon dioxide to organic compounds that are consumed by plants and animals, and the carbon is returned to the biosphere in the form of inorganic compounds by processes of respiration and decay. NUCLEAR PHYSICS See <<carbon-nitrogen cycle>>. |
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