History

Question

Killer smog in London happened in the 1950's and

a.

b.

C.

d.

was the result of a thermal inversion and smoke from burning low-quality coal

was the result of low-quality factory scrubbers, and lead to the US Clean Air Act

was the result of burning too much methane.

is now the name we give to any smog advisory.

Answer

a. was the result of a thermal inversion and smoke from burning low-quality coal.

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The killer smog in London that occurred in the 1950s was caused by a combination of factors, including a thermal inversion and the burning...