1. a) Name the states that are bigger oil producers than North Dakota.
b) Which states has North Dakota surpassed in oil production recently?

2. By how much has oil production from the Bakken Shale increased in the past three years?

3. a) How much oil does the U.S. consume every year?
b) How many barrels of recoverable oil could the Bakken shale contain?

4. How has oil production helped the citizens of North Dakota?

5. If they have known about the Bakken Shale oil since at least the 1950s, why haven't oil companies retrieved it?

6. What has really caused the increase in oil production in North Dakota and other places in the past two years?