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

Question

Quizplus · Accepted Answer

During the Middle Oligocene, there was a major lowering of sea levels which facilitated the crossing of ancestral ceboid monkeys from Africa to South America on natural rafts. The two continents were not connected at that time, and there was no connecting sheet of ice. The Atlantic Ocean was still a significant barrier.

During the Middle Oligocene,ancestral Ceboid Monkeys Could Have Traveled from Africa