Because water can absorb and transfer heat well, the human body uses it to stabilize temperature. Water has a relatively high heat capacity, meaning it can absorb a lot of heat before its temperature rises. ... Water also helps expel excess heat from the body as water vapor from the lungs and sweat on the skin.
The first sentence is the answer and the other ore explanation
To make babies
they need to make babies for population growth
but some ppl also have sex for fun,pleasure
lol hope it helps
