Earthworms are ________

Harmful to man

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Useful to farmers

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Both useful and harmful to man

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Found only near banks of rivers

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Solution

The correct option is C Both useful and harmful to man
Their burrows on the sloping land can cause soil erosion. They are intermediate host for the parasites of some useful animals as pigs and chickens and they spoil golf grounds which are required to be kept hard.

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Earthworms are ________

The correct option is C Both useful and harmful to manTheir burrows on the sloping land can cause soil erosion. They are intermediate host for the parasites of some useful animals as pigs and chickens and they spoil golf grounds which are required to be kept hard.

The correct option is C Both useful and harmful to man
Their burrows on the sloping land can cause soil erosion. They are intermediate host for the parasites of some useful animals as pigs and chickens and they spoil golf grounds which are required to be kept hard.