Question

what is global warming

Answer 1

global warming means the increase in average effective temperature near the Earth's surface
due to an increase in the amount of greenhouse gases on its atmosphere

Answer 2

$<b>hey there..!!$

here is ur ans..

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GLOBAL WARMING :

On a cold winter night, you would have snuggled under a blanket to keep yourself comfortably warm. Imagine if someone were to cover you with a dozen blankets? It would get very HOT! If you have experienced this, you will understand global warming better. 
    Earth is surrounded by A mixture of gases called atmosphere. A few of these, called the greenhouse gases ( water vapour, carbon di oxide, methane and nitrous oxide)  have the ability to trap heat. 
    Just as a blanket keeps you warm, The greenhouse gases make the Earth warm. Without this warmth, the Earth would be too cold for us to live in. However, when there is too much of greenhouse gases in the atmosphere - the Earth becomes too HOT! This overheating due to excess of greenhouse gases, is called Global Warming.
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