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Steam trains used steam engines to keep the train moving using burning coal

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I think it's a bad thing because it puts a lot of chemicals in the sky, not being able to have healthy or clean air

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I think it's a bad thing because it puts a lot of chemicals in the sky, not being able to have healthy or clean air

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Steam engine's are used for some cars today

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Cars used steam engines like these in the past used the same way with steam trains

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They could run out of coal not being able to make steam with no coal to burn

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They could run out of coal not being able to make steam with no coal to burn

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later they started using coal as their fuel to start producing steam.

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later they started using coal as their fuel to start producing steam.