Which Factor is Directly Involved in Calculating NPP

Question

Which factor is directly involved in calculating NPP?
A) the change in growth of the human population
B) the amount of solar energy converted to chemical energy by plants
C) the amount of chemical energy required by plants to support themselves
D) the number of births and deaths in a population over one year

Accepted Answer

NPP, or net primary productivity, is defined as the amount of solar energy that is converted into chemical energy by photosynthesis in plants, minus the amount of energy that is used by the plants themselves through processes such as respiration. Therefore, option B is directly involved in calculating NPP. The other options (A, C, and D) are not directly related to this process.