Question

list some systematic methods to get clean grains from crop ​

Answer 1

Answer:

threshing and winnowing

Answer 2

Answer:

WINNOWING ,SIEVING  AND THRESHING

Explanation

Threshing - Separating grains from stalks by beating stalks on a hard surface.

Winnowing - Heavier grain is separated from lighter components with the help of blowing air wind.

Sieving - Separating components of a mixture which differ in particle size.

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