So why do so many life-forms breathe oxygen? There are probably thousands of kinds of metabolisms, or chemical processes that ...

The dot and cross diagram shows that a water molecule is made up of one oxygen atom joined to two hydrogen atoms, so the formula of water is H 2 O. A nitrogen molecule is made up of two nitrogen ...

The JEE Main 2025 curriculum PDF has been made available by the National Testing Agency (NTA). To make their exam preparation ...

Seamless animation of recycle icon and chemical formula of atmospheric nitrogen (N2) on clear sky background. Nitrogen chemical element. Nitrogen chemical element. Sign with atomic number and atomic ...