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If Gross Primary Productivity (GPP)is 120 Units Per Day,and the Respiration

Question 62

Multiple Choice

If gross primary productivity (GPP) is 120 units per day,and the respiration rate (R) of primary producers is 30 units per day,net primary productivity (NPP) is _______ units per day.[Note: Use the formula NPP = GPP - R.]


A) 4
B) 30
C) 90
D) 120
E) 150

Correct Answer:

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