Question

With each step up in Trophic levels:

A. There is always a larger amount of Biomass
B. There is always a lower amount of Biomass
C. There is approximately a two-fold increase in energy.
D. There is approximately a 10% loss of energy
E. None of the above

Answer 1

D
the energy consumed in eating soon wears off in heat energy to keep the organism alive. us humans to the same

Answer 2

but is it 10% always?

Answer 3

I agree with D; I think the 10% is simply a rule of thumb - an approximation which certainly does not hold true for every situation. But yes, you'll see the 10% efficiency statistic mentioned in many books.

Answer 4

10% efficiency means 90% loss of energy

Answer 5

@jc7 is correct - sorry, I read through the answer choice too quickly.

Answer 6

So it is E

Answer 7

Given the choices, I agree with E