plankton

Science Dictionary
plankton  [%PREMIUM_LINK%]     (plāngk'tən)  Pronunciation Key 
Small organisms that float or drift in great numbers in bodies of salt or fresh water. Plankton is a primary food source for many animals, and consists of bacteria, protozoans, certain algae, cnidarians, tiny crustaceans such as copepods, and many other organisms. Compare benthos, nekton.

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