Pheretima posthuma is highly useful asA. Their burrows make the soil looseB. They make the soil porous, leave their castings and take organic debris in the soilC. They are used as fish mealD. They kill the brids due to biomagnification of chlorinated hydrocarbons.

Pheretima posthuma is highly useful asA. Their burrows make the soil l

1.	Pheretima posthuma is highly useful asA. Their burrows make the soil looseB. They make the soil porous, leave their castings and take organic debris in the soilC. They are used as fish mealD. They kill the brids due to biomagnification of chlorinated hydrocarbons.
Answer» Correct Answer - B Pheretima posthuma is highly useful as they make the soil porous, leave their castings and take organic debris in the soil.

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Pheretima posthuma is highly useful asA. Their burrows make the soil looseB. They make the soil porous, leave their castings and take organic debris in the soilC. They are used as fish mealD. They kill the brids due to biomagnification of chlorinated hydrocarbons.

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