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What is the theory for formation of fossil fuel plz help

A:cabon dioxide levels decreased, resulting in nitrogen fixation

B:earth cooled, changing oxygen to carbon

C:fossil fuels are the remnants of organisms that lived a long time ago and were buried, heated, and formed into hydrocarbons

D:fossil fuels arrived on earth from comets and asteroids

User Kybazzi
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2 Answers

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Answer:

I think is letter C
User BBonDoo
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Answer:

C.fossil fuels are the remnants of organisms thta lived long time ago and were buried heated and formef into hydrocarbons

User Ravi Sisodia
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