Winter Cold Wave: Entire North India including Delhi is in the grip of severe cold. Till now many people have lost their lives due to cold wave. A red alert has been issued by the Meteorological Department. This means the risk of cold wave has increased. In such a situation, it is important to take care of yourself. To avoid cold wave, attention should be paid to all kinds of measures. But before that it should also be known that what is this cold wave, how it comes, what are…
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