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2016-03-10T23:28:36+05:30
When d changes appear in d secondary sexual charecterz in male by d secretion of testosterone Harmone...

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i didn't get it
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mestruation in boyz occur whn testis which s situated in scrotum wll secrete testosterone Harmone thiz harmone bringz abt changes in the secondary sexual charecterz in male......thiz s d tym d sperm ll release....
i thnk nw ua clear wid it....