How long does it take for bones to decompose?
It takes 40 to 50 years for the bones to become dry and brittle in a coffin. In soil of neutral acidity, bones may last for hundreds of years, while acid peaty soil gradually dissolves the bones.
it usually requires three weeks to several years for bones to completely decompose depending on factors such as temperature, humidity, presence of insects, and submergence in a substrate such as water.
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