Global Warming
Greenhouse is a natural process by which some gases in the atmosphere trap some of effect the Sun's energy, warming the Earth enough to support life. These gases are known as the greenhouse gases and are mainly carbon dioxide, methane, chlorofluorocarbons and nitr us oxide.
With the increasing burning of fossil fuels and also the rapid deforestation, there are more greenhouse gases in the atmosphere, trapping more heat. The Earth's average temperature increases and this is known as global warming. Some scientists predicted that the Earth's temperature may rise between 15 C to 45 C by 2030.