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What is the approximate annual net primary productivity of the entire biosphere?

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Q-00084807

50 billion tons

170 billion tons

200 billion tons

100 billion tons

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Which term refers to the vertical distribution of different species in an ecosystem?

Q3.

What is the main function of primary productivity in an ecosystem?

Q4.

Which type of productivity represents the rate of energy input after accounting for the energy used in respiration by plants?