One of the natural methods of fixing atmospheric nitrogen is in lightning storms, the spark zaps nitrogen and oxygen together to make oxides of nitrogen which dissolve in rain. I am not sure how important this is compared to biological fixation in any case it would depend on the frequency of storms.
David
Electrical discharges (lightning) in Earth's early atmosphere, which contained no oxygen and a great deal of methane created some of the amino acids (the building blocks of protein).
Maybe it's not required for private dwellings, just public consumption, but, yeah, it kills off the nasty enteric bacteria (E. coli 0157:H7, salmonella, Clostridium, usw.)
You are correct, sir (sodium+ & chloride-, not Cl2).
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