During the last Ice Age, approximately 30% of Earth's land surface was covered by glaciers. Which of the following areas experienced the most glaciation?
A) Siberia
B) Australia
C) North America
D) Europe
Answer: C
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A. the same B. higher C. more changeable D. lower
Which of the following best describes Shiprock, a famous volcanic feature in New Mexico?
A) an extinct, massive, rhyolitic shield volcano B) the eroded remains of a volcanic pipe and radiating dikes C) an extinct, highly symmetrical, composite volcanic cone D) a very recently active, basaltic cinder cone
By 2025, demographers predict that what percentage of the world will be urbanized?
A) almost 90% B) about 60% C) approximately 30% D) about 53% E) a little less than 70%
Which of these subjects is most important for understanding the root cause of earthquakes?
A) Chemistry B) Physics C) Biology D) Math