Question

Which was a major cause of environmental pollution in American cities during the late 1800s? . . . . . . . . . A. . large numbers of horses used for transportation . . . . . . . . B. . chemicals used in dry cleaning shops . . . . . . . . C. . dust storms blowing in from the Great Plains . . . . . . . . D. . wastewater discharge from hydroelectric power plants .

Answer 1

If it was in the 1800's the most logical answer would be (A), Horses emit a lot of greenhouse gases because they have the same stomach system as cattle and in large numbers the air pollution would skyrocket

Answer 2

Large numbers of horses used for transportation was a major cause of environmental pollution in American cities during the late 1800s. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has come to your help.