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Need some help figuring out the basis of this

Demonstrate your understanding of marine plankton, microbes, plants, and algae by creating two job postings or resumes. These should include how those organisms are important to their ecosystems. See the assignment details for further instructions.

User RobCroll
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Scientists classify plankton in several ways, including by size, type, and how long they spend drifting. But the most basic categories divide plankton into two groups: phytoplankton (plants) and zooplankton (animals)
User Andrey Pushkarev
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