Question

What is approximate height of ozone layer in atmosphere? What role does it play for human survival?

Answer 1

1. Ozone layer, also known as the ozonosphere, region of the upper atmosphere.
2. It is $15Km-35Km$above the earth’s surface.
3. It contains relatively high concentrations of ozone$O_3$ molecules.
4. This region extends from $10Km-18Km$ approximately up $50Km$ (about 30 miles) above the earth’s surface.

Importance of ozone for the survival of humans:

1. The small ozone layer on top of the stratosphere is very important for human survival.
2. As it absorbs harmful ultraviolet radiations present in sunlight and prevents it from reaching the earth's surface.
3. Ultraviolet radiation can cause many types of skin diseases like skin cancer.
4. It is also harmful to living cells and plants.
5. The ozone layer also keeps the earth warmth by trapping infra red radiations.