Question

question 19 (5 points)
listen
how does the hydroelectric dam pictured here impact the environment?
a) by releasing toxic chemicals in their emissions
b) by blocking fish migration
c) by producing greenhouse gases
d) by generating significant heat that artificially warms nearby water

Explanation:

Hydro - electric dams create physical barriers in rivers. This impedes the natural movement of fish that need to migrate upstream or downstream for spawning, feeding, or other life - cycle activities. Hydro - electric dams do not typically release toxic chemicals in emissions (unlike some industrial processes), do not produce significant greenhouse gases during normal operation (unlike fossil - fuel power plants), and do not generate significant heat to artificially warm nearby water.

Answer:

B. By blocking fish migration