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6. which fossil fuel releases most carbon dioxide?
7. where is carbon dioxide stored?
- in a tank
- underground
- undee sea
8. what do fossil fuels release?
- carbon dioxied
- natural gas
- sulfur dioxide
9. what problems do sulfur dioxide cause?
- it contributes to global warming
- it contributes to acid rain
- it harms the ozone layer
10. is kinetic energy in wind renewable?
11. why are uranium and plutonium used as nuclear fuels?
- they are radioactive
- they are metals
- they release alot of heat when they burn
12. do renewable resources cost any money?