why only girlsreproduce?why not boys?
Humans reproduce through sexual reproduction in which both male (boys) and female (girls) take part to produce offsprings. The male produces sperms and female produces ova. The male transfers it sperm into the vagina of female during sexual intercourse. The sperm fuses with egg to form the zygote inside the body of female. The zygote then develops into complete baby and after nine months female give birth to baby. Thus, both boys and girls are necessary for reproduction to take place.