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All fossil fuels contain this element. A)Iron B)Hydrogen C)Copper D)Magnesium
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All fossil fuels contain this element. A)Iron B)Hydrogen C)Copper D)Magnesium

User Alan Bateman
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5 votes
I believe it is hydrogen :) 
User Protuberian
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6.1k points
2 votes
im  sure its hydrogen 
User Kailin
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