Question

2. Why is it said that - ?
(a) The ozone layer is a protective
shell of the earth.​

Answer 1

Answer:

because it doesn't let the harmful rays to come to the surface of the earth

Answer 2

Answer:

The ozone layer acts as a protective layer for life on the earth because it absorbs harmful ultraviolet radiation of the sun. These radiations, if reach the Earth's surface, can cause skin cancer.

Explanation:

The ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (UVR) from the sun, protecting life on Earth from its potentially harmful effects. When the sky is clear, there is an inverse relationship between stratospheric ozone and solar UVR measured at the Earth's surface.