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Antoine Lavoisier, discovered Oxygen and Carbon and their importance of living things.
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Robert Angus Smith connected acid rain to air pollution
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Ernst Haeckel coins the term ecology
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Eduard Seuss defines the biosphere
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Animal camouflage studied and described
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Henry Chandler Cowles studies ecological succession
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Ecological Society of America founded
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The Dust Bowl crisis re-focuses ecology on practical land usage practices
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Arthur Tinsley defines ecosystem
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People first become aware of the harmful effects of pollution on ecological systems and on people.
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Nature Conservancy is founded.
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Eugene Odum, Howard Odum wrote the first ecology textbook and ecology becomes a university course.
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Acid rain effects on lakes is discovered and studied by Harold Harvey
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Conservation Biology established as a discipline focusing on environmental management
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Scientists discover hole in the ozone over Antarctica
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Water pollution seriously reduced due to new sewage treatment practices
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Air pollution reduced in cities as unleaded gas and catalytic converters are used in autos