The progressive warming up of the earth's surface is mainly due to the
(A) Automobile exhau
(B) Blanketing effect of CO2
in the atmosphere
(C) De-forestation
(D) Thickening of ozone layer
(A) Automobile exhau
(B) Blanketing effect of CO2
in the atmosphere
(C) De-forestation
(D) Thickening of ozone layer