Question

Air pollution takes place in two different layers of the earth, atmosphere
A. troposphere and stratosphere
B. mesosphere and troposphere
C. stratosphere and hydrosphere
D. troposphere and hydrosphere

Answer 1

Hint: Air pollution is defined as the unwanted substances mixed with air which in turn leads to weakening of the stratospheric layer of the earth. Based on the chemical composition the atmosphere is split into two layers, hemisphere and heterosphere.

Complete step by step answer:
Troposphere is the lowest region of the atmosphere, extending from the earth's surface to a height of about \[6-10 {{ }}km\](the lower boundary of the stratosphere)
Mesosphere Is the layer of the earth's atmosphere which is located at above the troposphere, extending to about \[50km\] above the earth's surface
Stratosphere is the region of the earth's atmosphere which is located at above the stratosphere
Hydrosphere is all the waters bodies on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds
According to the above information we are clear with pollution. Which effects in all parts of the earth layer but majorly they effect in the troposphere and hydrosphere. Hydrosphere layer is indirectly affected by air pollution by rainfall.
So in troposphere and stratosphere air pollution takes place
Hence the answer to this question is option ”D”

Additional information:
The two sorts of air pollutants are primary pollutants, which enter the atmosphere directly, and secondary pollutants, which form from a reaction.
Primary pollutants
Some primary pollutants are natural, like volcanic ash. Dust is natural but exacerbated by human activities; for instance, when the bottom is torn up for agriculture or development.
Secondary Pollutants
Any city can have photochemical smog, but it's commonest in sunny, dry locations. A rise in the number of vehicles in cities worldwide has increased photochemical smog (when ozone forms air pollution it is known as smog)

Note:Even air pollution effects in hydrosphere like acid rains but the major effect in the troposphere and stratosphere whereas in the stratosphere ozone layer plays a major role. A rise in the number of vehicles in cities worldwide has increased photochemical smog.