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Birds contaminated with ____________________ have been unable to successfully reproduce because of excessively fragile eggshells.
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Q44: Water evaporating from trees and vegetation in
Q62: _ are chemical sex attractants emitted that
Q64: A biologist is most likely to say
Q74: According to environmental writer Bill McKibben,"the great
Q75: Extinction can be the result of habitat
Q80: Many inland wetlands have been drained or
Q81: Birds contaminated with _ have been unable
Q90: The movement of people into and out