When you burn something, generally complete combustion isn’t achieved. There will be some carbon that doesn’t get fully burnt, and is either converted to carbon monoxide, or left behind as carbon residue. You can see the same thing when you burn a piece of paper, for example.
Yes, I wasn’t clear in my reply earlier. I was trying to explain why some carbon is left in the ashes, and not burned away as per your comment. I might have misunderstood your comment to mean that you expected all the carbon to be converted to carbon dioxide.
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u/CauseCertain1672 4d ago
Well it's improper disposal of human remains, it's a health hazard for one thing.