CO2, CFCs and Chlorine belong to a category of chemicals known as gree – McqOptions

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1.	CO2, CFCs and Chlorine belong to a category of chemicals known as greenhouse gases. Excess presence of these gases in the atmosphere leads to
A.	global warming
B.	protecting the ozone layer
C.	heavy rains
D.	loss of soil fertility
Answer» B. protecting the ozone layer

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