When primary producers expend energy to build new tissue, this is ________.
A) net primary productivity
B) the amount of energy available to consumers
C) maintenance costs
D) net primary productivity and the amount of energy available to consumers
E) maintenance costs and the amount of energy available to consumers

Question

Quizplus · Accepted Answer

Net primary productivity (NPP) is the rate at which all the plants in an ecosystem produce net useful chemical energy; it is equal to the difference between the rate at which the plants in an ecosystem produce useful chemical energy (gross primary productivity) and the rate at which they use some of that energy during respiration. This net energy (NPP) is what is available to consumers in the ecosystem.

When Primary Producers Expend Energy to Build New Tissue, This