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Why earthworm is called as farmer's frie...

Why earthworm is called as farmer's friend?

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They make burrows in the soil and make it porous which helps in respiration and penetration of developing plant roots. They help in recycling of dead and decayed plant material by feeding on them. Hence they are called as friends of farmers.
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What is called as farmers friend?

Identify the correct statements from the below. (I) Vermicompost is the primary goal of vermiculture. (II) Earthworms play a vital role in maintaining soil fertility. (III) Earth worms are called as "farmer's friends". (IV) Frogs are called as "biological indicators of soil fertility".

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