Seudónimo Seudónimo
  • 21-06-2016
  • Health
contestada

Name the three pollutants that have decreased the most since 1990.

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nathanhill100 nathanhill100
  • 21-06-2016
They vary but lead, carbon monoxide, and sulfur dioxide are some of the most common ones that have decreased the most 
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ajescoto99
ajescoto99 ajescoto99
  • 21-06-2016
 Lead, carbon monoxide, and sulfur dioxide have decreased the most since 1990.
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