How does air help in separation of grain from chaff? What is the process known as? [2 MARKS]

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Solution

Name of the process : 1 Mark
Explanation : 1 Mark

Winnowing is an agricultural method developed by ancient people for separating grain from chaff.

This separation is done by blowing air through the grains and allowing the wind or a forced current of air to blow away chaff and impurities which are lighter than the grains.

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