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Soil is one of the five essential factors crucial for human life on the one hand the authors describe a responsible approach and use of soil established on a basic knowledge of the soil the skin of the planet earth miroslav kutilek springer. Soil the skin of the planet earth kutilek miroslav nielsen donald r on amazoncom free shipping on qualifying offers soil the skin of the planet earth. The soil or the earths skin as we used to say started its existence when macroscopic life was moving from oceans to the mainland to the surface of continents and islands this migration was happening roughly 500 million years ago maybe even a little bit earlier. This textbook chapter presents several biodiversity case studies including a study of prairie soil the 1930s dustbowl and the importance of soil conservation practices the resource includes a link to current news articles and a teachers guide