4.14 increase in greenhouse gases results in an enhanced greenhouse effect and that this may lead to global warming and its consequences

- The enhanced green house effect is brought about by pollution molecules such as carbon dioxide, methane and water vapour, these are green house gases.

Water Vapor, Methane and Carbon dioxide are all greenhouse gases.
Greenhouse gases changes the climate.
The UV rays are increasingly re-emitted which warms the earth's surface.
Melting ice case, raising sea levels can happen due to Greenhouse gases.