Question

Differentiate between.
1. Spraying and Fumigation
3. Threshing and Winnowing​

Answer 1

Explanation:

With fumigation, the chemicals penetrate the entire area, essentially leaving no pests left alive. Spraying, on the other hand, is typically a preventative measure that is done before you have entered your space. It kills any existing pests, but uses different chemicals than fumigation.

3.threshing and winnowing

Threshing: it is done by beating the sheaves against the wooden bars to separate the grains from the stalks. Winnowing: it is the process of removing the unwanted husk from the grains. It is done by pouring the grains from a height on a windy day when the grains fall on the ground and the chaff is blown away

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