Energy In Biomass

Question 1

Why is the amounts of biomass in organisms decided as each stage in a food chain

Answer 1

Some lost through waste materials
(Excretion)
Respiration supplies all energy needs for living processes (movement)
Much of this energy transferred to surroundings

Question 2

The mass of living material at each stage in a food chain is what

Answer 2

Less than it was at the previous stage