Question 6 of 10 Which of Earth's layers is just below the crust?
A. Outer core
B. Upper mantle
C. Inner core
D. Lower mantle

Explain: plate tectonics and people.

Which country in the video has the highest population growth rate?

Which of the following statements best describes the quantity theory of inflation? a.inflation occurs because production cost rise and this cost increase is passed on to consumers in the form of higher prices b. inflation occurs because there is too much money in the economy c. inflation occurs because demand of good and services exceeds existing supplies d. none of these