more half sinking

Science Dictionary
sink   (sĭngk)  Pronunciation Key 
  1. A part of the physical environment, or more generally any physical system, that absorbs some form of matter or energy. For example, a forest acts as a sink for carbon dioxide because it absorbs more of the gas in photosynthesis than it releases in respiration. Coral reefs are a long-lasting sink for carbon, which they sequester in their skeletons in the form of calcium carbonate.

  2. Geology

    1. See playa.

    2. See sinkhole.

    3. A circular depression on the flank of a volcano, caused by the collapse of a volcanic wall.


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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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