Question

With the help of a diagram describe the composition of atmosphere.

Answer 1

Atmosphere of the Earth is composed of a large number of gases.It also includes dust particles, water vapour, pollen grains and other impurities like smoke and chemicals. They vary in their composition.

Nitrogen, which comprises 78% of the Earth's atmosphere, is a very essential element for maintaining the fertility of the soil along with the growth of plants and animals.

Oxygen, which is a life-giving gas, comprises 21% of the Earth's atmosphere.

Carbon dioxide is needed by plants to make their own food. It also helps in maintaining the temperature of the Earth surface by absorbing the heat radiated from the Earth surface. Its composition is merely 0.03%, which is increasing day-by-day.

Other gases like argon, helium and neon and water vapour and dust particles covers the remaining 1% of the atmospheric composition.

The composition of atmosphere can be better understood with the help of the following diagram: