The westerlies and the trade winds both have their origin in the:
a. polar highs.
b. subtropical highs.
c. equatorial lows.
d. subpolar lows.
Question 2
Absent human activity, Milankovitch theory indicates that ____.
a. the Holocene interglacial would continue indefinitely
b. glaciers would cover much of North America in a few hundred years
c. the Holocene interglacial would end, and another major glaciation would begin
d. climate would continue to get warmer, and nearly all of the Greenland and Antarctic ice caps would disappear within 3,000 years
e. climate is completely unpredictable
