Interaction Between Nature and Humans

Several types of nature-humans interactions with respect to materials and energy include resources, waste and global environmental problems (Fig. 6.1). In this Chapter we focus on the global environmental and waste problems such as acid rain, CO2 emission, underground CO2 sequestration, geological disposal of high level nuclear waste, and water and soil pollutions. 

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Unequivocal evidence has been presented for the existence of a recognizable pattern in the complex multiple interactions between trypsin and human serum which allows the classification of human a2"ni croglobulin into seven distinct categories.The molecular interpretation of the binding of trypsin with 02 macroglobulin and the potential clinical value in recognizing the nature of such binding are discussed. 

Competitive mineral-mineral interactions involving chemically similar elements are widespread in nature. Interactions between zinc and iron, and zinc and tin reduce zinc absorption in humans, and pose potential nutritional consequences. Dietary zinc levels may also be of Importance in human copper absorption. Natural foods, alone or in combination, tend to have a balance among minerals, but in the formulation of proprietary vitamin-mineral supplements or Infant foods, there is the potential for creating nutrltionally-signlflcant Imbalances. Little is known about the role of other food components in conditioning these interactions. This question should be a priority for future research. 

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