Subtraction of Which of the Following Will Convert Gross Primary

question 50

Multiple Choice

Subtraction of which of the following will convert gross primary productivity into net primary productivity?

• A) the energy contained in the standing crop
• B) the energy used by heterotrophs in respiration
• C) the energy used by autotrophs in respiration
• D) the energy fixed by photosynthesis
• E) all solar energy

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