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Pheretima posthuma (earthworm) is highly...

Pheretima posthuma (earthworm) is highly useful as or Most important use of earthworm is

A

Their burrows make the soil loose

B

They make the soil porous leave their castings and take organic debris in the soil

C

They are used as fish meal

D

They kill the birds due to biomegnification of chlorinated hydrocarbons

Text Solution

Verified by Experts

The correct Answer is:
B
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