What is Ozone Layer Depletion

Ozone layer depletion entiregrade
Ozone layer depletion entiregrade

Ozone layer depletion is the gradual thinning of Earth’s ozone layer in the upper atmosphere caused by the release of the chemical substances containing gaseous chlorine and bromine from industry, factory and other human activities.

J.C. Farman, an English scientist told for the first time about ozone layer depletion over Antarctica in 1985 AD which was termed as the ozone hole.

An ozone hole is a region in the stratosphere where the amount of ozone is drastically reduced.

The main factors which cause ozone layer depletion are chlorofluorocarbons (CFCs).

CFCs was invented by Thomas Midgley in 1930 AD.

Nowadays, people use CFCs for chilling and freezing as well as for the solvent. Chlorofluorocarbons have no natural source but they are produced by industries.

CFCs are the compounds that consist of the atoms of carbon, fluorine and chlorine. They are very cheap, non-toxic and non-inflammable.

We use CFCs gases in the refrigerators, air conditioner, aerosol spray cans, plastic manufacturing (foam), etc.

Except for CFCs methyl chloroform, carbon tetrachloride, methyl bromides and oxides of nitrogen are also responsible for ozone layer depletion.

The gases like CFCs, CO, oxides of nitrogen (NO2), etc causes ozone layer depletion by the influence of UV rays.

For example, in the presence of UV rays, C.F2.Cl2 splits into ClO and O2.
The CIO also breaks into Cl and Oxford by the UV rays.
The Cl and O participate in a chain reaction and causes ozone layer depletion.

C.F2.Cl2 ——-UV rays—–>

C.F2.Cl +Cl

Cl+ O3 ——–UV rays——>
CIO + O2
(Chlorine Oxide)

ClO —UV rays–> CI +O

O + O3 —UV rays—> O2 +O2

Effects of ozone layer depletion

We know that ozone is a protective layer of the earth. Its depletion causes fatal diseases like cancer.

Some major effects of ozone layer depletion are as follows

1. Effects on human health
2. Effects on plants
3. Effects on other animals
4. Global warming

1. Effects on human health

Due to ozone layer depletion, ultraviolet rays of the sun may fall directly on the Earth’s surface, which may cause skin inflammation, different types of cancers, cataract and loss of immunity, etc.
It also may affect DNA which may cause mutation.

2. Effects on plants

Ozone layer depletion affects plants badly. It reduces forest and decreases crop production.

3. Effects on other animals

Ultraviolet rays of the sun also affect the fertility of animals.
Larva and eggs of aquatic animals die because of ozone layer depletion. It causes an adverse effect on their population.

Ozone layer depletion can cause many types of cancer to other animals too.

4. Global warming

A pre-thought that can happen
A pre-thought that can happen

Because of ozone layer depletion, more ultraviolet rays and more radiation of the sun will come to the earth’s surface. Due to this, the temperature of the earth increases, which causes global warming.

We know that if the temperature of the earth continues to increase in the present ratio, the day is not so far when the oceans will cover a number of islands.

Conservation of ozone layer

We should use the following methods for the conservation of the ozone layer. They are as follows:

1. We should avoid or reduce the use of those appliances in which CFCs and HCFCs are present.
2. We should promote to use HFC^s instead of using CFCs and HCFCs.
3. We should avoid or reduce the use of nitrogenous fertilizers.
4. We should use vehicles that run by electricity instead of using vehicles that run by fossil fuels like petrol and diesel, etc.
5. We should use a filter for greenhouse gases in vehicles. It controls their mixing in the atmosphere.
6. We should conduct a public awareness programme about the consequences of ozone layer depletion.
7. We should use public vehicles instead of using private vehicles.

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