2) Name one source and one harmful effect of each of the following air
pollutants. (a) Sulphur oxide (b) Nitrogen oxides (c) CFCs (6m)
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- Sulphur dioxide is a very harmful pollutant when present in the atmosphere. It can cause the respiratory problems, including permanent lung damage.
- The source of nitrogen dioxide in the air is produced by the motor vehicles.
- Carbon monoxide is a very poisonous gas which reduces the oxygen carrying capacity of blood.
- The Chlorofluorocarbons are responsible to deplete the ozone layer in the atmosphere. Ozone layer protects us from harmful ultraviolet rays of the sun which can cause skin cancer.
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