Air is a mixture of many gases like nitrogen, oxygen, carbon dioxide and water vapour.

Concept: Air is an admixture of different feasts like nitrogen( 78), oxygen( 21), argon( 1), carbon- dioxide(0.03) and water vapour. T

he composition of these feasts aren't fixed. For illustration, the proportion of carbon dioxide in metropolises is lesser than that in pastoral areas. 

The quantum of water vapour is lesser in the stormy season than in the dry season. 

La identidad no es algo estático, sino que la vamos definiendo a lo largo de nuestra vida, a través de nuestras conductas, de las capacidades que desarrollamos, de nuestra profesión y del amor que damos y recibimos.