Phrases with «air pollution levels»

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Sentences with «air pollution levels»

  • This was true even with the higher air pollution levels in the 1970s. (sciencedaily.com)
  • Many schools are actually some distance from busy roads and therefore unlikely to have high air pollution levels. (educationbusinessuk.net)
  • Understanding the many factors that influence a region's air pollution levels helps scientists project future levels and climate change. (pnnl.gov)
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