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प्रश्न
Give scientific reasons:
Ozone present in the stratosphere is called as “good ozone”.
उत्तर
Ozone present in the stratosphere is called as good ozone as this ozone absorbs UV rays from the sun which is harmful to living organisms. DNA and proteins of living organisms absorb UV rays and its high energy breaks down the chemical bonds within these molecules. This causes damage to skin cells and skin cancer of different types. A high dose of UV-B causes inflammation of the cornea called snow-blindness cataracts. This all is prevented by this stratosphere ozone as it absorbs UV rays.
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संबंधित प्रश्न
Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage?
Give one harmful effect of CFC.
What are the causes of depletion of ozone layer? Which diseases are likely to be caused if the ozone layer will become thinner?
How Ozone is Formed?
What step has been taken by UNEP in 1987 to prevent too much damage to the ozone layer?
How is ozone formed in the higher level of atmosphere?
Match the items in column I with the closely related ones in column II.
| Column l | Column lI | ||
| (i) | Chlorofluorocarbons (CFCs) | (a) | Global warming |
| (ii) | Fly ash | (b) | Biodegradable |
| (iii) | Cow dung | (c) | Nuclear radiation pollutant |
| (iv) | CO2 and methane | (d) | Acid rain |
| (v) | Sulphur dioxide | (e) | Industrial waste |
| (vi) | Iodine-131 | (f) | Ozone depletion |
Is ozone depletion related to global warming?
Enumerate the damage to humans, animals and plants caused due to ozone depletion.
State the essential function performed by ozone at the higher levels of the atmosphere.
