Question

3. Learn: Energy is transferred along food chains, however, the amount of available energy decreases from one
trophic level to the next. The reason for this is that only around 10 percent of the energy is passed on to the
next trophic level. Less energy is transferred at each level of the food chain, so the biomass gets smaller. The
rest of the energy passes out of the food chain in several ways.
Do: Which of the following is NOT a valid reason that less energy is transferred at each level of the food
chain? (2 pts total)
Choices:
A. Energy is released as heat energy during respiration
Answer
B. Energy is destroyed because animals are higher levels do not need as
much energy
C. Energy is used for life processes (e.g., Movement, breathing, etc.)
D. Energy is egested in feces or remains in dead organisms which are
passed to decomposers
I

Answer 1

''Energy is destroyed because animals are higher levels do not need as much energy'' is not the valid reason.

What is respiration?

Respiration is the cellular process of releasing energy from food. Some of the energy released is used to produce ATP. 90 percent of energy is lost as heat energy whereas 10 percent energy is transferred to other trophic levels.

So we can conclude that ''Energy is destroyed because animals are higher levels do not need as much energy'' is not the valid reason.

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