Given a scientific question, generate an incorrect answer to the given question. The incorrect answer should be a plausible alternative to the correct answer. The answer should be some other item belonging to the same category as the correct answer but should be incorrect.
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Question: All atoms of the same element share the same number of what type of particle?

Answer: quarks

Question: Natural gas is often found along with what other fossil fuels in underground deposits?

Answer: methane and oil

Question: Deeper layers of rock must be older than layers closer to the surface, this is the law of what?

Answer:
erosion