Nestor,
>But, Mark, isn't depletion itself a _consequence_, not a primeval cause, of
>both rising organic composition AND over-accumulation?
No. One can tie rising organic composition with depletion but depletion happens
whenever the non-renewable resource is used. So overaccumulation doesn't matter.
Maybe the rate of depletion is tied to over-accumulation.
Over-accumulation comes into play to explain the effects of the unavoidable
depletion.
Julien
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