Question

practice it!
which of the following is a potential environmental consequence of using dams for hydroelectric power?
sediments are unable to reach the end of the river.
it can disrupts the water cycle, creating a water shortage.
carbon emissions released by the dam contribute to climate change.
it can alter the chemistry of the water upstream from the dam.

Explanation:

• Dams trap sediment flowing downstream, so sediments cannot reach the river's mouth/end.
• Dams do not disrupt the global water cycle to cause shortages; they redistribute water locally.
• While reservoir decomposition can emit greenhouse gases, this is not a universal primary consequence compared to sediment trapping, and the statement is less accurate than the sediment point.
• Dams alter water chemistry downstream (not upstream) by changing flow, temperature, and nutrient levels.

Answer:

Sediments are unable to reach the end of the river.