Hubbert concluded that each oil region and nation has a Bell-shaped depletion curve.
2.
Part of the mental equation is that the EROEI of our generally preferred energy source, petroleum, has fallen in the past century from 100 : 1 to the range of 10 : 1 with clear evidence that the natural depletion curves all are downward decay curves.
3.
Part of the mental equation is that the EROEI of our traditional energy source, oil, has fallen in the past century from 100 : 1 to the range of 10 : 1 with clear evidence that Fossil Fuel natural depletion curves all are downward decay curves.
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