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Select the formula for ecological effici...

Select the formula for ecological efficiency:

A

`("Gross primary productivy"xx100)/("Incident solar total radiation")`

B

`("Food primary assimilated"xx100)/("Food energt ingseted")`

C

`("Net primary productivy"xx100)/("Gross primary productivity")`

D

`("Energy trophic a at n productio"xx100)/("Energy previousat n productio trophic level")`

Text Solution

Verified by Experts

The correct Answer is:
D
The ecological efficiency is the ratio of net productivity i.e. the amount of energy at the level below.
NPP (trophic level) : NPP (trophic level X-1)
Because energy diminishes at each successive trophic level food webs rarely contain 4 or 5 trophic levels.
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