APFIVE Calculating Net Primary Productivity
In a mature forest, if the gross primary productivity (GPP) is $$1200$$ $$g/m^2/yr$$ and ecosystem respiration ® is $$1150$$ $$g/m^2/yr$$, what is the net primary productivity (NPP)?
A
1200 $$g/m^2/yr$$
B
1150 $$g/m^2/yr$$
C
100 $$g/m^2/yr$$
D
50 $$g/m^2/yr$$
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