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History, 26.01.2020 08:31 iicekingmann

Which of the following was the worst polluter of washington's air during the early 1970s when people first began seriously worrying about environmental concerns?
a) cars and trucks
b) hanford site
c) lumber mills
d) factories

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Which of the following was the worst polluter of washington's air during the early 1970s when people...
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