alleryStart learning →Food chains generally have only three or four steps because
Alittle usable energy is left at each step
Bthe organisms refuse to eat each other
Cthere are far too few producers around
Dthe decomposers cut the chain short
Answer & Solution
Correct answer: A. little usable energy is left at each step
1. Only ~10% of energy moves up each level.
2. After three or four levels, **so little usable energy remains** that no further level can be supported.
3. Hence food chains are short.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch15 'Our Environment', §15.1.1_
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