Question

Damage to the ozone layer is a cause for concern? Justify this statement. Suggest any two steps to limit this damage. Plz answer fast

Answer 1

Damage to the ozone layer is a cause for concern because the harmful ultraviolet (LTV) radiation from the sun will reach the earth. This radiation is highly damaging to organisms, for example,is known to cause skin cancer in human beings.

Steps being taken to limit this damage are:

Reduce the use of ozone depleting substances Eke the chlorofluorocarbons (CFCs).

Do not release untreated CFCs present in ACs, fire extinguishers and refrigerators directly into the atmosphere when repairing them.

Use ozone friendly sprayers in perfumes, insect-repellants, etc.

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Answer 2

Cause of concern:

Ozone layer present in the stratosphere has thinned out by about 18 % over the equator and more so over the Antarctica where a big ozone hole appears every year. This has increased the level of UV-B radiations reaching the earth by 15-20%. These radiations are causing increased number of skin cancers, cataracts and reduced immunity in human beings. There is increased incidence of blinding of animals ,death of young ones, reduced photosynthesis, higher number of mutations an damage to arteries.

Steps to limit damage:

(i) Dispose of pre-1995 refrigerators, freezers, and air conditioning units properly.

(ii) Ban on production and use of chlorofluorocarbons.