Question

Result of ozone hole is:
A. greenhouse effect
B. global warming
C. acid rain
D.UV rays reach the earth

Answer 1

Hint: We know that ozone layer is a part of atmosphere of Earth composed of ozone gas $\left( {{{\rm{O}}_{\rm{3}}}} \right)$. The ozone layer is present in the second layer of Earth’s atmosphere, that is, the stratosphere. The ozone layer is very important.

Complete step by step answer:
Let’s understand the ozone hole in detail. The term ozone hole is used to describe the ozone layer in which the ozone layer gets damaged. The ozone hole means thinning of the ozone layer rather than a hole in the ozone layer. The ozone layer is becoming thinner day by day due to a chemical called chlorofluorocarbons (CFCs). CFCs are used in plastic products and refrigerants. We use these products (plastic) because they are not costly and do not harm human beings generally. But once CFCs are blown into the stratosphere, they start eating up the ozone layer and result in an ozone hole.
Let’s discuss the importance of the ozone layer. It absorbs the harmful UV rays of the sun and prevents it from reaching the surface of Earth. The UV rays are very harmful. They cause many skin diseases and cancer.
Due to the hole in the ozone layer, the UV light can enter the surface of Earth.
Hence, the correct choice is option D.

Note: It is to be noted that ozone molecules which are composed of three oxygen atoms, are always destroyed and reformed naturally. But due to the presence of CFCs in air the formation of ozone molecules is difficult once it breaks apart. This is the reason for the thinning of the ozone layer.