Where the minerals are?
Figures refer to proportion of world reserves available for extraction given current technology, whether economic or not. Reserves below not shown.

How many years left if the world consumes at today`s rate?

In an average lifetime (77.8 years) every american will consume:
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Ecoclimax is defined by Odum (1969) as the culmination state after a succession in a stabilized ecosystem in which maximum biomass (or high information content) and symbiotic function among organisms is kept per unit of available energy flow.