I'm not sure I get your claim about non-living things. Salt, zinc and a host of other, necessary, minerals were never alive. Are you saying that eating them is killing us? Many synthetic compounds are identical to their naturally occurring counterparts. How can our body tell a synthetic molecule from a "natural" one if the molecules are identical?
The only way we can utilize any metal is through ingesting a plant that is capable of absorbing and using it in their cellular structure.
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“How can our body tell a synthetic molecule from a “natural” one if the molecules are identical?”
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They’re not “identical,” they are included in the cellular structuer of another once living substance, as a much more complex molecule.
The reason for eating vegetation is to absorb the necessary nutrients through their cellular structure.
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