Answer:
The number of trophic level in an ecosystem
are each limited and are not more than 4-5. because the amount of energy flow
decreases with successive trophic level as only 10% of energy is transferred
from one trophic level to the next successive level.
So rest of the energy is lost in the
form of respiration and other vital activities to maintain life.
If more trophic levels are
present, the residual energy will be limited and decreases to such an extent
that it cannot further support any trophic level by the flow of energy.
So, the food chain is generally
limited to 3-4 trophic levels only,
e.g.,
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