Which is true about pyramid of biomass?
a. It shows the number of every organism in each trophic level that feed on other organism.
b. It shows the energy decrease as it is transferred from one organism to another while some is released to environment as heat energy.
c. It shows the amount of concentration of chemicals in organisms at higher levels in food chain.
d. It shows the amount of organic matter present in an organism decrease as the trophic level increases.