Earth is surrounded by atmosphere. The atmosphere acts as a warming blanket of air around the earth.
The earth’s atmosphere contains small amount of carbon dioxide, nitrous oxide, methane, water vapors and other gases in the atmosphere known as greenhouse gases.
Greenhouse gases help in increasing the temperature of the earth by retaining heat through a process known as greenhouse effect.
This phenomenon of rising the temperature of earth’s surface due to presence of greenhouse gases is known as global warming.
Consequences of global warming are warming of oceans, melting of glacier, dislocation and disappearance of plant and animal species and generation of new diseases and health issues etc.
Different ways that should be implemented to prevent global warming are Technological measures which include generation of electricity by using renewable sources of energy, using bio-char stoves for cooking etc. Economic measures include reforestation and paying carbon tax to government and policy measures include educating children and population control.