environment: Quick Facts

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Learn about the hygiene hypothesis and understand how exposure to certain germs help develop a child's immunity

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Topics

heredity versus environment Umwelt environmental change carrying capacity alkalophile Climate conservation hydrosphere Atmosphere Climate change evolution Metabolism heredity death Biological development Growth Reproduction river cell geography

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Biosphere: Environmental conditions

Key People

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Ishihara Shintarō

Japanese writer and politician

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Julia Carabias Lillo

Mexican ecologist and environmentalist

Barry Commoner

Barry Commoner

American biologist

greylag. Flock of Greylag geese during their winter migration at Bosque del Apache National Refugee, New Mexico. greylag goose (Anser anser)

Biology Bonanza