Multiple Choice
During the Middle Oligocene,ancestral ceboid monkeys could have traveled from Africa to South America because:
A) at that time,the two continents were connected
B) major lowering of sea levels facilitated crossing on natural rafts
C) an ice age created a connecting sheet of ice
D) none of the above;the Atlantic Ocean presented an impossible barrier,as it does today
Correct Answer:

Verified
Correct Answer:
Verified
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