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Chemical mixtures, power change

Throughout most of history, we had not developed the power to alter our environment significantly. Early everyday objects, such as stone hammers or wooden plows, were only physically changed from the natural material. Then came the chemical reduction of copper from natural minerals, followed by iron, and now the flood of new materials produced each year. We have developed, beyond question, the power to change Earth s natural chemical mixtures in almost any way we choose. [Pg.461]

See other pages where Chemical mixtures, power change is mentioned: [Pg.404]    [Pg.550]    [Pg.186]    [Pg.169]    [Pg.224]    [Pg.354]    [Pg.99]    [Pg.92]    [Pg.1456]    [Pg.92]    [Pg.66]    [Pg.214]    [Pg.383]    [Pg.266]    [Pg.312]    [Pg.456]    [Pg.1456]    [Pg.100]    [Pg.196]    [Pg.99]    [Pg.224]    [Pg.269]    [Pg.392]    [Pg.690]    [Pg.739]    [Pg.1105]    [Pg.242]    [Pg.302]    [Pg.202]    [Pg.15]    [Pg.440]    [Pg.165]    [Pg.80]    [Pg.191]    [Pg.90]    [Pg.247]    [Pg.55]    [Pg.396]    [Pg.195]    [Pg.158]    [Pg.53]    [Pg.468]    [Pg.196]    [Pg.94]    [Pg.257]    [Pg.181]    [Pg.41]    [Pg.224]    [Pg.119]   
See also in sourсe #XX -- [ Pg.461 , Pg.462 ]



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