Question

Which of the following environmental factors caused the changes in the light and dark-colored peppered moth populations in the 1850's?

A.
water pollution
B.
smoke and soot in the air
C.
acid rain
D.
erosion

Answer 1

air pollution during the Industrial Revolution.

Step-by-step explanation:

Factories were being built, and they ran by burning coal for fuel. The result was a dark smoke that covered the surrounding countryside. Trees that had been light and covered by lichens now were dark and bare. This clearly was having some impact on the moths.

Answer 2

i would say B, not sure tho