Question 3

Question

The pyramid shows how biomass changes between trophic levels of an ecosystem.

image b95050928618458399679f086eb24478



Which explains how the biomass at the top of the pyramid will change if a fire destroys a large percentage of the grasses in this ecosystem?

a
It will increase because the fire increases the efficiency of energy transfer and prey aquisition at higher trophic levels.
b
It will increase because the amount of energy lost as heat between the first trophic level and second trophic level will decrease.
c
It will decrease because there will be a greater number of organisms at the second trophic level to support the higher trophic levels.
d
It will decrease because the amount of chemical energy photosynthesis generates will not be enough to support higher trophic levels.

Answer 1

c
It will decrease because there will be a greater number of organisms at the second trophic level to support the higher trophic levels.