Question

Some of the chemical energy produced by plants is stored as biomass for future use. The total stored energy within the plants in an ecosystem is called the net primary productivity of the ecosystem. The net primary productivity of an ecosystem

Answer 1

A is a major factor that determines the rate of photosynthesis.
B ensures that plants get to use most of the energy they produce.
C is an estimate of the energy available for other trophic levels.
D affects the food web because most of the energy is trapped within plants.

Answer 2

@ltrout

Answer 3

The answer is c because as energy is transported through the trophic levels only 10% of the energy is passed on. The energy that is lost is the gross primary productivity-net primary productivity, therfore the net productivity is what is available to the ecosystems.