of biota. Photosynthetic organisms exposed the Earth's surface to oxygen, denitrifying bacteria have maintained the nitrogen concentration in Earth's atmosphere, and land plants have determined the rate of chemical weathering. Life determines the global biogeochemical cycles of the elements of biochemistry, especially C, N, P and S. Volume 8 traces the origin and impact of life on the geochemistry of the Earth's surface, with special emphasis on the current human impact on global biogeochemical cycles. Reprinted individual volume from the acclaimed Treatise on Geochemistry, (10 Volume Set, ISBN 0-08-043751-6, published in 2003)Comprehensive and authoritative scope and focusReviews from renowned scientists across a range of subjects, providing both overviews and new data, supplemented by extensive bibliographiesExtensive illustrations and examples from the field

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