Multiple Choice
The most recent North American glaciers reached their maximum thickness and extent between about ____.
A) 700 and 600 million years ago
B) 65 and 55 million years ago
C) 2.5 and 2 million years ago
D) 50,000 and 45,000 years ago
E) 26,000 and 20,000 years ago
Correct Answer:

Verified
Correct Answer:
Verified
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