Question

Which environmental change allowed people to travel by land between Asia and North America

Answer 1

Answer:

A. human adaptation to arctic environments.

Explanation:

The land travel between Asia and North America has been made possible by the Bering land bridge which was used over 20,000 years ago. Though the environment is a very cold one, a lot of migrants die enroute. Thus, the journey can be made more successful if human system can adapt to artic environments.

Answer 2

i think the answer is A