In 1948 in Donora,Pennsylvania,the routine release of toxins into the air became a deadly fog because of
A)a chemical spill in the nearby Monongahela River.
B)greatly increased activity of the nearby industries.
C)a thermal inversion and stagnant weather conditions.
D)the failure of the chemical scrubbing systems on smokestacks.

Question

Quizplus · Accepted Answer

The deadly fog in Donora, Pennsylvania in 1948 was caused by a thermal inversion and stagnant weather conditions. This caused the toxins released by nearby industries to be trapped close to the ground, leading to severe health issues for the residents of Donora.

In 1948 in Donora,Pennsylvania,the Routine Release of Toxins into the Air