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Environmental Issues
Question
The zone of atmosphere in which the ozone layer is present is called
-
ionosphere
-
mesophere
-
stratosphere
-
troposphere
Solution
C.
stratosphere
The ozone layer is mainly found in the lower portion of the stratosphere, i.e., approximately 20-30 km above the earth, though its thickness varies seasonally and geographically ozone layer acts as a shield absorbing UV rays from the sun.
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Some More Questions From Environmental Issues Chapter
The cause of acid rain is :
Which one of the following causes ozone depletion ?
What disease is caused due to consumption of fishes captured from water contaminated with mercury ?
Which one of the following is not a green-house gas ?
Which gas contributes the maximum in global warming ?
Fill in the blanks with suitable words :
1. Increase in concentration of soluble salts in the soil is called.........
2. Aforestation can check the advancement of......... .
3. DDT is a serious pollutant as it is a.........pollutant and undergoes......... .
4 .........plant has become a troublesome weed in agricultural fields.
5 .........are major aerosol pollutant present in jet aircraft emission.
Write “True” or “False” :
Coin one word for the following statements :
Discarded computer parts like monitors, key boards, mouse etc.
Coin one word for the following statements :
Degradation of organic waste by worms like red wigglers, white worms and earthworms.
Coin one word for the following statements :
Cleaning of vast areas covered by forests.
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