When it comes to controlling the body’s water content, life is a bit more complicated than evolutionary biologists would have us believe.
Evolutionary biology must explain how life actually works, not just how it looks.
In dealing with the laws of nature, our body is constantly losing water, mainly through respiration, perspiration, and the formation of urine.
The force that opposes filtering water out of the circulation by the hydrostatic pressure is osmosis.
Water is the body’s most abundant molecule, making up about 60 percent by weight.