Wednesday, September 30, 2015

Geek Trivia: In The Early 20th Century What Heavily Polluting Substance Was Used For Mosquito Control?

In The Early 20th Century What Heavily Polluting Substance Was Used For Mosquito Control?

  1. Petroleum Oil
  2. Coal Tar
  3. Mercury
  4. Kerosene

Think you know the answer?

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