How do you read population pyramids in world geography?

Ozone in the upper atmosphere has been depleted by a. sulfur dioxide. b. chlorofluorocarbons. c. carbon dioxide. d. oxygen.

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water

Why are young eastern european democracies at an increased risk for turmoil during a global recession? a) anger against increased democracy b) failure of the free market system c) government corruption d) lack of from the e.u.