Class 10 Biology Our Environment Effect of depletion of ozone layer and waste disposal to the

Effect of depletion of ozone layer and waste disposal to the environment

Ozone is a molecule formed by three atoms of oxygen.

Oxygen is essential for all life processes whereas ozone is a deadly poison.

At the higher levels of the atmosphere, it shields the surface of the earth from ultraviolet radiation of the sun which is highly dangerous to organisms as it can cause skin cancer.

Fig. Ozone layer

The UV radiations split apart some molecular oxygen (O2) into free oxygen (O) atoms which then combine with the molecular oxygen (O2) to form ozone (O3).

O2   -->O + O

O + O2 --> O3 (ozone).

Chlorofluorocarbon (CFCs) a synthetic chemical which is used as refrigerants and fire extinguisher has been linked for sharp drop of ozone in the atmosphere.

Fig. Structure of chlorofluorocarbon

Heaps of garbage is heaped all over the places in towns, cities which can affect the environment badly.

Garbage causes damage to the local ecosystem.

Garbage if tossed into water it travels long distances with water current and wind which can directly affect aquatic life.

In land garbage can cause land pollution and can harm or kill animals, serves as a house of bacteria and also can start fire.

Fig. Garbage

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