Q12 of 29 Page 1

The figure below shows the relative contribution of four green house gases to global warming:


(i) Identify the gases A and C.


(ii) Why are these four gases called the green house gases?


(i) Gas A is Carbon Dioxide and Gas B is Chlorofluorocarbon (CFC).


(ii) These gases trap heat on the surface of the earth and cause greenhouse effect, hence are called greenhouse gases.


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