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Mathematics 8 Online
OpenStudy (anonymous):

Why r phytoplankton are only found at the surface of ocean water?

pooja195 (pooja195):

Hi welcome to openstudy this I think belongs in the bio section http://openstudy.com/study#/groups/Biology

pooja195 (pooja195):

Also the phytoplankton are found only at the top of the ocean because they do photosyentesis which requires sunlight so they are only found in the surface.

OpenStudy (anonymous):

Because they need sunlight and because they do a process called photosynthesis which converts light into energy :)

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