1. One egg cell matures and passes through the Fallopian tubes every two weeks/ twenty-eight days.
2. If the egg is / is not fertilised, it leaves the body through the vagina.
3. Two hundred million sperm are produced every day / month from the beginning of puberty.
4. A zygote / embryo is the fisrt cell of the new human being.
5. The zygote / embryo is implanted in the wall of the uterus.
2. If the egg is / is not fertilised, it leaves the body through the vagina.
3. Two hundred million sperm are produced every day / month from the beginning of puberty.
4. A zygote / embryo is the fisrt cell of the new human being.
5. The zygote / embryo is implanted in the wall of the uterus.
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