A puddle of snow and black stones or a modern take on Darwin's warm pond

Disclaimer. The KDPV was set for beauty and is not entirely realistic - during the period described in the article, there were no trees on our planet yet.

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3. Carbonaceous and ferruginous meteorites - also served as primary sources of sulfur and phosphorus for terrestrial biochemistry  

   
   
   
   
   

The evolution of various variants of the “warm Darwin's pond”, considered, for example, here , allows the development of other biochemical cycles, for example, hydrogen sulfide and cyanide. Nevertheless, the ability of carbon to form long organic chains predetermined the success and universality of carbon biochemistry.