The Black Earth Förderungs- und Betriebs GmbH It took place at the

It took place at the University of California

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The Black Earth Förderungs- und Betriebs GmbH It took place at theSoil is the Earths living skin. It provides anchorage for roots, holds water long enough for plants to make use of it and the nutrients that sustain life otherwise the Earth would be as barren as Mars. It is home to myriad micro organisms and armies of microscopic animals as well as the familiar earthworm that accomplish biochemical transformations from fixing atmospheric nitrogen to recycling wastes; it receives and process all fresh water, provides