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Major Air Pollutants Clean Air Act – EPA. Air Pollution During the 1950’s and 1960’s, most factories looked like this
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There are thousands of ways that more than one hundred elements can combine with each other to form different substances. Just as the elements can be sorted
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Crystals. A crystal is a solid in which the atoms are arranged in orderly, repeating patterns. Crystalline structure can be seen either on the inside
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OPTO-ELECTRONIC TECHNOLOGIES Pierre LECOY, Professor, ECP Elective Course S8 2012-2013