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According to the 10% Law of energy transfer in a food chain:
AOnly 100% of energy passes to the next trophic level
BOnly about 10% of energy passes to the next trophic level
CExactly 10% of total mass converts back into oxygen
DEnergy doubles at each step up the food chain
Answer & Solution
Correct answer: B. Only about 10% of energy passes to the next trophic level
The 10% Law: only ~10% of energy at one trophic level is transferred to the next. The remaining 90% is lost as heat, respiration, movement. This limits food chains to 3-4 levels.
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