If GPP is 5 units and R is 0 units, what is NEP?

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Multiple Choice

If GPP is 5 units and R is 0 units, what is NEP?

Explanation:
Net ecosystem production is what you have left after subtracting respiration from gross primary production. NEP = GPP − R. With GPP = 5 and R = 0, NEP = 5 − 0 = 5. So the ecosystem is a net producer by 5 units. The other numbers would require respiration to be negative or to exceed GPP, which isn’t the case here.

Net ecosystem production is what you have left after subtracting respiration from gross primary production. NEP = GPP − R. With GPP = 5 and R = 0, NEP = 5 − 0 = 5. So the ecosystem is a net producer by 5 units. The other numbers would require respiration to be negative or to exceed GPP, which isn’t the case here.

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