Question

What do you understand by global warming?i(100to120)

Answer 1

Global warming is the phenomenon of the heating of earth's temperature due to the excessive presence of green house gases like CO2 ,methane water vapour etc. these gases allow the low wavelength radiation from sun to pass through them and do not allow the high wavelength radiations reflected by earth to extract out from atmosphere this cause the earth temperature to rise up which leads to global warming

Answer 2

Global warming means increase in temperature of earth surface.i t causes many effects.and leads to many harmful activities.it increase water level by melting glaciers.we can prevent global warming in many ways by not using excessive use of vehicles and not creating pollution etc