The net primary productivity (NPP) and the gross primary productivity (GPP) are related such that: NPP = GPP - Respiration
NPP refers to the net primary productivity of ecosystems. It is the amount of sugar made from photosynthesis when the amount of sugar burned during respiration has been deducted.
The total amount of sugar made during photosynthesis is the Gross Primary Productivity (GPP). This amount does not include the amount of sugar burned by respiration.
Thus, the equation relating the 3 variables would be:
NPP = GPP - Respiration
More on ecosystem productivity can be found here: https://brainly.com/question/27614862
#SPJ1
