Use the graphs about producers and consumers of primary energy on the following page to answer questions 1 through 3. These figures are presented in quadrillion Btu, which is a way to measure large amounts of energy.

Question
1

How many more quadrillion Btu of primary energy does Canada produce than it consumes?

Question
2

List all the countries that are mentioned as major consumers but not mentioned as major producers of primary energy in 1990.

Question
3

Calculate the total amount of energy in quadrillion Btu consumed by Canada, Mexico, and the United States.