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The National Wild and Scenic Rivers System was created by Congress in 1968 to preserve certain rivers with outstanding natural, cultural, and recreational values in a free-flowing condition for the enjoyment of present and future generations. This website contains river management plans, GIS files and maps of the designated rivers, publications and bibliographies related to the designated rivers and river conservation, and information about the Interagency...
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English
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Discover Earth’s place in the Solar System and how it compares to its neighbouring planets in this pocket-sized guide. Learn all you need to know about each planet from Mercury to Neptune, and even gain an understanding of Pluto and why it’s not strictly a planet with the latest news from the New Horizon. Which planet has the most dangerous atmosphere, or the most moons, or the most potential for life? You’ll find the answers to these questions
...51) Nervous system
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English
Description
Introductory text explains the functions and physical concepts of the nervous system with color photography and simple scientific diagrams.
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English
Description
Could the prairie, which runs on sunlight and rain, be the model for the perfect farm? This program explores natural systems agriculture, or perennial polyculture, an alternative to industrial agriculture and agroforestry that combines cutting-edge science with nature itself. Dr. Wes Jackson, a MacArthur Fellow and founder of the Land Institute, illustrates these concepts in action, discussing the environmental and economic advantages of perennials-rather...