Answers

2015-09-07T09:46:06+05:30
Global Warming is the increase of earth's average surface temperature due to the effect of Greenhouse Gas
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2015-09-07T09:55:36+05:30
It is the increase in temperature of earth due to the high level greenhouse gases.It is a major threat to our environment.
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Global Warming is the increase of Earth's average surface temperature due to effect of greenhouse gases, such as carbon dioxide emissions from burning fossil fuels or from deforestation, which trap heat that would otherwise escape from Earth. This is a type of greenhouse effect.Earth's climate is mostly influenced by the first 6 miles or so of the atmosphere which contains most of the matter making up the atmosphere