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Question

Net primary productivity (NPP) in an ecosystem is

A
GPP + R = NPP
B
GPP - R = NPP
C
R - NPP = GPP
D
GPP - NPP = R
Solution
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Correct option is A. GPP - R = NPP
  • Net Primary Productivity or NPP can be defined as the rate of accumulation of biomass or energy.
  • NPP (Net Primary Productivity) is GPP (Gross Primary Productivity) -R (respiration)
So, the correct answer is 'GPP - R = NPP'

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