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In which form is energy lost as it moves up the trophic levels?
Answer & Solution
Correct answer: B.
1. Each organism uses most ingested energy for metabolic work.
2. This metabolic activity dissipates energy as heat into the environment.
3. Hence each trophic transfer loses roughly 90% of ingested energy.
_Source: NCERT Class 10 Science, Ch 13 "Our Environment", §13.1.1_
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