noun
small organisms that float or drift in bodies of water, consisting of animals and plants
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Plankton are microscopic organisms that float in the ocean and form the base of the marine food chain.
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I heard that plankton is essential for the survival of many marine animals.
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Hey, did you know that plankton are like the tiny snacks for fish in the sea?
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In the vast ocean of opportunities, we must remember that even the smallest plankton can make a big impact.