*$_Which of the following absorbs the insolation from the sun and preserves the earth's radiated heat, thus acting like a blanket allowing the earth neither to become too cold nor too hot??

*$_Which of the following absorbs the insolation from the sun and pres

1.	*$_Which of the following absorbs the insolation from the sun and preserves the earth's radiated heat, thus acting like a blanket allowing the earth neither to become too cold nor too hot??
A.	Dust
B.	Water vapour
C.	Ozone
D.	Nitrogen
Answer» D. Nitrogen