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Bardi's Argument Of Renewable Resources

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In chapter two of the textbook (Extracted), the author argues that land pants have been very efficient miners of mineral resources, but their mining activities never went too deep. Their actions were limited to the fertility of the soil, from which they absorbed mineral irons. In addition, the author believes that for the past few hundred millions years the earth has seen ice ages, hot ages, giant asteroid impacts, volcanic mega-eruptions, and so forth. But despite all of these activities, Bardi believes that the biosphere on the continents never change too much as it is now. Similarly, mankind mining of the same minerals is found to be unprecedented. Man digs, drills, crushes, extracts, and processes minerals based on his needs (Bardi,

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