The ozone layer is a layer of gas in the Earth's upper atmosphere, which protects the planet from ultra-violet radiation. Human activities have led to the release of gases that destroy ozone faster than natural processes can create it. Although the hole in the ozone layer and the enhanced greenhouse effect are not the same thing, they are connected. CFCs a major cause of the hole in the ozone layer are also a greenhouse gas. For more information, see Ozone - the facts .
Greenhouse gases Each greenhouse gas has a different potential to warm the Earth's surface.
The warming potential of an individual greenhouse gas depends on its ability to absorb heat, its lifespan when released to the atmosphere and its concentration in the atmosphere. Most common greenhouse gas. Other sources include deforestation, vegetation burning and decomposition, and cement production. However, this is not enough to substantially reduce the enhanced greenhouse effect. Most potent greenhouse gas.