4.12 recall that water vapour, carbon dioxide, nitrous oxide, methane and CFCs are greenhouse gases

ENHANCED GREENHOUSE EFFECT
is when more of the greenhouse gases are produced absorbing more of the infrared reflecting out of earth and immiting it back onto the earths surface increasing the temperature further leading to climate change

CFC - Cluorofluorocarbon
effects the ozone layer which absorbs UV light making it less efficient in absorbing UV light.

UV light comes from the sun.
UV light is converted as infrared and absorbed.
50% of UV light is reflected.
The more the greenhouse gases the more heat there is.
Infrared gets emitted back out.