Which of the following is not a factor that contributes to the desertification of an area?
a. jet stream
b. erosion by wind
c. changing climate conditions
d. the mismanagement of land by people

What is the northern most national park in the world

Explain the value of statistics and other data to positive economics and to normative economics

Which of the following best describes the purpose of a nation’s boundaries? a. to limit the movement of goods and people b. to make it easier for cartographers to create maps c. to make the movement of goods and people easier d. to prevent other countries from invading territory