Answers

2016-01-26T23:23:13+05:30
They get sex because of transfer of sperm from penis to vagina
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2016-01-27T16:50:21+05:30
Basically they sex to reproduce a new generation and entry of the penis into vagina is important as it will transfer sperm cells to the vagina where it will fuse in the female's egg called ovary. Which will after get fertilised to become embryo and it will turn to a baby.
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