Biology Facts

Water molecule

Where does the oxygen come from that fish breathe?

Water is formed from the combination reaction of hydrogen gas (H2) and oxygen gas (O2) to produce liquid water (H2O). In other words, each molecule of water is made up of two hydrogen atoms and one oxygen ato...
tooth eruption

Why do children loose their baby teeth?

Children usually start loosing their baby teeth (primary teeth) anywhere between the age of 6 to 7 years where their jaws have grown to its mature size. The reason for this is that the jaw of a baby is too sm...

Why do people burp?

A burp (sometimes called a belch or by its medical term, eructation) is the release of gas from the digestive tract (in this case, theesophagus and stomach) through the mouth. It is part of the body natural c...