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What brown substance in a cigarette causes lung cancer?
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1 vote
What brown substance in a cigarette causes lung cancer?

User Camlspotter
by
7.7k points

2 Answers

4 votes
Answer: nicotine




Explanation
User Ayeesha
by
8.3k points
6 votes

Answer:

nicotine

Step-by-step explanation:

User Shaunmartin
by
8.6k points
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