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In paragraph 9, Dr. Jeff Kalina affirms that “Petroleum has inherent hazards...” (line 53) because he feels that
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According to Dr. Paul Lioy in paragraphs 5 and 6, volunteers
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According to the text, all the examples below are illnesses directly associated with the recent oil spill in the Gulf of Mexico, EXCEPT
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The main purpose of the article is to
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According to the text, extracting oil from the Canadian tar sands