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.]

Question

Quizplus · Accepted Answer

The formula for calculating NPP is NPP = GPP - R.

Given that GPP is 120 units per day and R is 30 units per day,

NPP = GPP - R

NPP = 120 - 30

NPP = 90 units per day.

Therefore, the correct answer is choice C.

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