1.

Match the items of Column A with those of Column B.​ Sulphur dioxide​ a 1 Damage ozone layer​ Carbon dioxide​ b 2 Reduces the oxygen- ​ carrying capacity of the blood​ Carbon ​monoxide​ c 3 Acid rain​ Chlorofluoro-carbons​ d 4 Greenhouse gas​

Answer» Match the items of Column A with those of Column B.​



























Sulphur dioxide​ a 1 Damage ozone layer​
Carbon dioxide​ b 2 Reduces the oxygen- ​



carrying capacity of the blood​
Carbon ​monoxide​ c 3 Acid rain​
Chlorofluoro-carbons​ d 4 Greenhouse gas​




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