(i) Expand CFCs.
(ii) CFCs are a part of greenhouse gases. Name the other gases.
(iii) Explain the major harms caused by these gases.
(iv) Mention the consequences of the degradation of O3.
(i) Chlorofluorocarbons.
(ii) CO2, CH4, N2O
(iii) These gases absorb radiations that come to earth,* surface and heat it.
(iv) Degradation of ozone layer is very harmful to the mankind. It causes damage the human skin cells. It may reduce breaks in the chemical bond of DNA molecules and cause mutation.
