Question

Changing a river into a lake is basically what a large dam does. One reason we do this to create reservoirs of fresh water. However, dams change the local ecosystem in a big way.

What is one negative impact of building a dam?
Responses
A Dams are needed to create hydroelectricity.Dams are needed to create hydroelectricity.
B Dams can create smog that pollutes the lake.Dams can create smog that pollutes the lake.
C Dams can help reduce the intense heat of summer.Dams can help reduce the intense heat of summer.
D Sometimes people who lived along the banks of the river are displaced.

Answer 1

D — Sometimes people who lived along the banks of the river are displaced (flooding from the reservoir forces relocation).