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US History Ch. 27

Across
Legislation designed to reduce smog and air pollution in large American cities
Developed four laws of ecology with which growing numbers of people agreed
Wanted to create a nature reserve 100 miles in diameter in New York's Adirondack Mountains
Could lead to melting of polar ice caps and flooding of coastal areas
Belief that nation's resources should be used wisely
Down
Studied ways in which ecological systems change over time