6. How much bioenergy and waste was used in 2012?
- 8%
- 4%
- 6%
- 2%
7. How long does it take to plan and build a nuclear reactor?
- 15 years
- 8 years
- 10 years
- 20 years
8. How much renewable electricity was used in 2012?
- 7%
- 8%
- 9%
- 11%
9. How much petroleum was used in 2012?
- 36%
- 42%
- 32%
- 35%
