what is the greenhouse effect?

Question

anonymous · Answer

two main gases of the greenhouse effect?
two natural and manmade sources of these gases?
three influences of the greenhouse effect on earth?
phenomenon created by the greenhouse effect?
PLEASE HELP,WILL FAN, AWARD MEDAL, AND GIVE TESTIMONY`
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anonymous · Answer

main  gases are CO2,SO2; natural sources are volcanic erruptions and earthquakes;influences:rise in temperature on earth,depletion of ozone layer,melting of ice bodies on poles and other regions........greenhouse effect is the trapping of heat in the earth's atmosphere due to concentration of greenhouse gases in the atmosphere