In the late 1800s, American cities suffered from serious environmental pollution due to which of these causes?
a. clear cutting of forests in suburban parks
b. improper disposal of used car batteries
c. inadequate city sewer systems
d. smokestack emissions from hydroelectric power plants
In the late 1800s, American cities suffered from serious environmental pollution due to "d. smokestack emissions from hydroelectric power plants," since this was during the Industrial Revolution.
