Latitudes 66 1/2° North and South of the Equator are important because they?
-
A.
are called the Arctic and Antarctic circles respectively -
B.
indicate the angle of inclination of the axis of the earth’s rotation -
C.
mark the limits of the polar areas which experience periods of continuous night and daylight -
D.
mark the equatorward limits of the occurance of precipitation in the form of snow