Author Question: What allowed human and animal migration to occur from Asia to North America? a. a warm spell ... (Read 26 times)

BrownTown3 · **on:** Jul 13, 2018

What allowed human and animal migration to occur from Asia to North America?
a. a warm spell called the Blling-Allerd period
b. the Eemian interglacial period
c. retreat of continental glaciers
d. the Bering land bridge
e. melting of the polar ice caps

Question 2

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