How were early humans able to cross from asia to the americas? a. they traveled down the east coast of north america. b. they crossed a strip of land that exists between the two continents. c. they built a land bridge that connected asia and north america. d. they walked over glaciers during the last ice age

The correct answer is  B) They crossed a strip of land that exists between the two continents.

Early humans were able to cross from Asia to the Americas because they crossed a strip of land that exists between the two continents.

During the last Ice Age, early humans from Asia were able to cross to North America through the Bering Strait. A land bridge that existed in that time. With the pass of time, now that bridge sank. Today is underwater. But that portion of land is what allowed early humans to arrive in North America. That 56 miles bridge connected what today is Alaska with Russia.

food and resources were plentiful.

women were encouraged to marry later in life so they could work in factories.

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69