Question

Result of ozone hole is
A. UV radiation reaching earth
B. Greenhouse effect
C. Acid rain
D. Global warming

Answer 1

Hint: The word 'ozone hole' leads to the reduction in the upper atmosphere of the protective ozone layer over the polar regions of the Earth. The solar radiation that now hits the surface of the Earth, where it triggers health issues, including eye loss to skin cancer, affects individuals, plants and animals living under the ozone hole.

Complete answer:
The ozone molecule consists of three atoms of oxygen which are linked together while the oxygen we breathe comprises only two molecules of oxygen.

- In the stratosphere, which blocks the destructive ultraviolet radiation, the ozone layer is composed. Ultraviolet rays induce heritable mutational modifications. They can kill plants and animals and can lead human beings to have skin cancer or cataracts.
- Mostly because of the existence of an ozone layer across the planet would the nature of life on earth be probable.
-Gases which produced chlorofluorocarbons (CFCs), halons or freons were found to be the key trigger of the ozone hole.
- These are typically found in aerosol cans and emitted by much electronic equipment, reducing the ozone level in the stratosphere.
-Many of these gases contain chlorine, a significant factor for the ozone layer's thinning.
-The ozone gases in the ozone layer are broken down by the existence of chlorine within CFCs, which raises the chances of ozone depletion.
- Around 80% of ozone loss has been compensated for by CFCs.

Hence, the correct answer is option (C).

Note: Through the action of the sun's ultraviolet radiation on oxygen molecules, stratospheric ozone is continually created. Although ozone is emitted mainly at tropical latitudes, in the lower stratosphere, large-scale air circulation trends shift ozone toward the poles, in which its concentration develops.
Methyl bromide, the most powerful ozone depleting substance. Fluorocarbons (HFCs), which are less dangerous substitutes for CFCs, are expected to be phased out by developed countries in 2020. India is also relying on new technology to reduce CFC use and eventually discontinue it in the near future.