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Over the past 20 years, the major pollutants in our world have A) decreased significally B) increased significally C) stayed at the same levels D)decreased slightly
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Over the past 20 years, the major pollutants in our world have A) decreased significally B) increased significally C) stayed at the same levels D)decreased slightly
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Jan 2, 2017
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over the past 20 years, the major pollutants in our world have A) decreased significally B) increased significally C) stayed at the same levels D)decreased slightly
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Dewalla
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increased ignifically
SajithK
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Jan 4, 2017
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B) increased significantly
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Jan 6, 2017
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