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Question

Pheretima posthuma is highly useful as

[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 biomagnification of chlorinated hydrocarbons
Answer & Explanation

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

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