Which coincided with the prolonged cooling periods over the last 900,000 years?
A. Continental glaciation
B. Intense solar activity
C. Intense volcanic activity
D. Frozen oceans worldwide
Answer: A
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A) 1% B) 13% C) 70% D) 33% E) 3%
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The Flemings and Walloons live in
A) Belgium. B) France. C) South Africa. D) Switzerland. E) Liechtenstein.
Frost typically forms on the inside of a windowpane (rather than the outside) because
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