Questions 1. How much coal will be produced in the year 2020 for each region?

2. What trend would you predict for the next ten years for each region?

3. If people keep using coal in the same way, scientists say there may be enough coal reserves to last 200 to 300 years. Does your graph show the trends that match what scientists say? What kinds of factors might cause them not to match?

4. Can you think of any problems that could come from using only 15 years of data to predict trends for the next 100 years? Explain your answer. How could you prevent some of these problems?