what's sex and reproductive system
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The human reproductive system usually involves internal fertilization by sexual intercourse. In this process, the male inserts his penis into the female's vagina and ejaculates semen, which contains sperm. ... Only one sperm is required to fertilize the ovum.
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The human reproductive system usually involves internal fertilization by sexual intercourse. In this process, the male inserts his penis into the female's vagina and ejaculates semen, which contains sperm. ... Only one sperm is required to fertilize the ovum
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