carboncycle
carbon cycle n.
1. Physics. See carbon-nitrogen cycle.
2. Ecology. The combined processes, including photosynthesis, decomposition, and respiration, by which carbon as a component of various compounds cycles between its major reservoirs—the atmosphere, oceans, and living organisms.

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Universalium. 2010.

Look at other dictionaries:

  • Water cycle — The Earth s water is always in movement, and the water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Since the water cycle is truly a cycle, there is no… …   Wikipedia

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