Answer: D. A buildup of mostly methane gas, which is pontentially explosive.
Explanation:
Firedamp refers to a gas mixture, largely methane, that appear in underground coal mines. It is explosive at concentrations between 5 and 10% in the air.
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Note : Because Many of My Dreams came true and I realized.
I’m pretty sure it’s none of the above cause I’m googling it a bunch and and it say you use the dideoxy method
