Human activity causes changes to the groundwater and surface water in a watershed. Which change to groundwater or surface water is classified as a chemical change?

Question

A
Concrete streets and parking lots cause more water to remain surface water instead
of absorbing into the ground to become groundwater.
B
Hydroelectric dams built on rivers create lakes upstream of the dams and variable flow downstream.
C
Industrial waste that is dumped in a river causes acidic conditions that cause damage to fish digestive systems.
D
Rainwater collects in drainage ditches and flows to nearby lakes, increasing the water volume in lakes.

Answer 1

C
Industrial waste that is dumped in a river causes acidic conditions that cause damage to fish digestive systems.