Science facts in hindi

1. ?????? ?? ?????: ?????? ???? ???? ?? 1,600 ????/???? ?? ?????? ?? ????? ??, ????? ???? ?? ??? ????? ???? ???? ??????? ?? ???? ??? ???? ???? 2. ????????? ?? ???????: ????? ????????? ???? 93 ??? ?????? ???? ????? ??, ?? ????? 200 ??? ?? ???? ?????????? ???? 3. ???? ?? ????? ???: ???? ???????
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