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Nelson, Nathan O.; Mikkelsen, Robert L. – Journal of Natural Resources and Life Sciences Education, 2005
Trends in animal production have moved the industry toward large confined animal feeding operations (CAFOs). These CAFOs concentrate large amounts of manure-based nutrients in relatively small areas, which increases the risk of nutrient loss to the surrounding environment. In response to water quality concerns, P-based manure application…
Descriptors: Industry, Water Quality, Animal Husbandry, Agricultural Production
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Fensham, Peter, Ed.; And Others – 1994
This book is a result of a workshop where 14 science educators were invited to draft chapters on the implications that the research studies in a specific content area of science have for its teaching. The relations between social forces and perceptions of purpose and content lay behind discussions in the workshop, and influenced the emergence of…
Descriptors: Biology, Chemistry, Constructivism (Learning), Elementary Secondary Education