Published by:
CGP EDU Academic Team
Published on: August 21, 2026
In the equation:
GPP is Gross Primary Productivity, NPP is Net Primary Productivity and R here is 
Text Solution
Verified by ExpertsThe correct answer is:
B
Net primary productivity is the amount of carbon retained in an ecosystem(increase in biomass); it is equal to the difference between the amount of carbon produced through photosynthesis (GPP) and the amount of energy that is used for respiration (R).
GPP- R = NPP
So R = respiratory loss.
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