Q72 of 287 Page 362

What is greenhouse effect?

Greenhouse effect is a phenomenon that heats the earth’s surface. The greenhouse gases prevent infrared diations from escaping the earth which results in heating of the earth’s surface.


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70

What is the reason of increasing concentration of carbon dioxide in the atmosphere?

 71

What is green house ?

 73

What are green house gases?

 74

What do you mean by global warming?