10 Atmosphere and environment

In this chapter, we study about air, its pollutants, oxygen, hydrogen, water and more environmental issues and facts.   Air and Oxygen:   We all know that oxygen is important for human and animal life. It is even important for plant life. The process by which...

Hydrogen: We all know by now that hydrogen is the first element of the periodic table. It is the simplest of all atoms. It just has one proton. It is the only atom that has no neutron. The hydrogen atom has only one electron. It combines with another hydrogen atom to...