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What does primary productivity measure? A. the rate at which phototrophs make organic matter B. how energy moves from organism to organism C. how producers carry out photosynthesis D. the number of consumers
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What does primary productivity measure?

A. the rate at which phototrophs make organic matter
B. how energy moves from organism to organism
C. how producers carry out photosynthesis
D. the number of consumers that make up a food web

User Aldith
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Answer:

A. the rate at which phototrophs make organic matter

User Quiver
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