What is true about the Ice Age's effect on the Americas?
A. The Southern Hemisphere was more affected by the Ice Age than the Northern Hemisphere.
B. The Northern Hemisphere was more affected by the Ice Age than the Southern Hemisphere.
C. All of South America was covered in ice, which is the reason why that region is less tropical than North America.
D. The only part of North America that was covered in ice was the Pacific west coast.
"B. The Northern Hemisphere was more affected by the Ice Age than the Southern Hemisphere" would be the best option, since the Ice Age stopped the melting of the northern polar ice caps, which had major effects on sea levels.
