Which two factors act together to cause changes in the Earth-Sun distance at the seasonal solstices and equinoxes?
A) the obliquity and the eccentricity
B) the precession and the Milankovitch cycle
C) the eccentricity and the precession
D) the Milankovitch cycle and the obliquity
Question 2
Small (< 50,000 square kilometers) broad unconfined glaciers are called
A) ice caps.
B) ice sheets.
C) crevasse glaciers.
D) valley glaciers.