Question

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

Explanation:

Hydroelectric dams can create physical barriers that prevent fish from migrating upstream or downstream for spawning and other life - cycle activities. Hydroelectric dams do not generate significant heat to warm water, release toxic chemical emissions, or produce greenhouse gases during normal operation.

Answer:

A. By blocking fish migration