Some molluscs can also be .......... to human activities with regard to its sting.

Boon

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Hazardous

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Useful

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None of the above

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Solution

The correct option is A Hazardous
Some molluscs are used as food resources and for pearl industry whereas some are harmful as they can cause food poisoning by its toxins and the bite of the blue-ringed octopus is fatal to human beings. The stings of some tropical molluscs species contain venom and can kill humans.

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