AP Environmental Science Quiz
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THE LIVING WORLD: ECOSYSTEMS
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In a forest food chain, only about 10% of energy transfers between trophic levels. What best explains this loss?
A
Most energy is destroyed during digestion, violating conservation of energy, so higher trophic levels must create new energy internally.
B
Most energy is lost as heat through cellular respiration and in waste, so only a fraction becomes biomass available to consumers.
C
Energy transfer is low because predators refuse to eat prey completely, leaving nearly all energy in uneaten tissues.
D
Energy transfer is low because producers store energy only as minerals, which cannot be consumed by herbivores.
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