What did north america look like during the last ice age

The last ice age contained at least 20 ice fluctuations in which ice melted and advanced. Sometimes, 30% of earth was covered in ice.

This included the most of North America, California became almost completely entombed in ice. Today, evidence of the glacial takeover can be found as far down as southern California's San Bernardino Mountains.

b. 20: 5

explanation:

20% of the worlds population lives in southwest asia, and less than 5% of the world's

land area.