| http://www.w3.org/ns/prov#value | - It is also an intermediate of organics breakdown.It is also indicative of active geological processes, either volcanism which provides heat, water and chemical energy for life on Earth or serpentinization of minerals which provides heat and is a chemical process that runs out of (preferably liquid, I think) water.So both biotic and abiotic methane is highly interesting for looking at habitability
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