Why did large numbers of Africa migrate to the americas?

Which of Earth's layers is just below the crust? lower or upper?

How are the river valleys different from the glacial valleys?

Why is it the way it is?

The chernozem soil in the steppe region isa. of little use for farming. b. consistently fertile in spite of overgrazing. c. filled with algae and mosses. d. losing some of its fertility because of overgrazing

Which type of landscape regions show evidence that crustal uplift was dominant over erosional forces in the past?

What is the cause of deforestation

Which of the following areas have the highest population density? A) Quebec B) United States C) California D) New York City

What are the cause and consequences of transportation

A self-employed forester who cruises timber for the public? Non-professional Consulting Forester Public Relations Bank and Credit Unions Teaching Research Government (State & Federal)

Describe the sizes of the sun moon and earth models given to the participants