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[–] 38 points 6 months ago* (3 children)

There's 10⁹ living cells in a gram of surface soil, and in 20 km depth that reduces to 10⁶ cells per gram, but they're still alive and actively metabolizing down there! eating rock, mmhm tasty rock oh yeah! :p

they have cell turnover rates of hundreds of years though, so they age very slowly and multiply very slowly due to energy shortage.

https://en.wikipedia.org/wiki/Deep_biosphere

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