The construction of dams,canals,and reservoirs
A)does not affect stream flow.
B)reduces the sediment load downstream.
C)decreases the salinity of the soil.
D)increases the amount of nutrients available for crops and fish.

Question

Quizplus · Accepted Answer

The construction of dams, canals, and reservoirs reduces the sediment load downstream because the sediment is trapped behind the dam or reservoir. This can have negative impacts on downstream ecosystems and fisheries, but it can also provide benefits such as flood control and the creation of hydroelectric power. However, the other answer choices are incorrect. The construction of dams, canals, and reservoirs can affect stream flow and reduce the amount of water flowing downstream. It may also increase the salinity of the soil due to evaporation from reservoirs or irrigation canals. While the nutrient levels in water may increase behind dams, the overall impact on crops and fish is variable and depends on a number of factors.

The Construction of Dams,canals,and Reservoirs