Which option is not a disadvantage of dam and reservoir systems? a. It reduces nutrients released downstream. b. It displaces people behind the dam. c. It disrupts the migrations of fish. d. It reduces water loss through evaporat

The option that is not a disadvantage of dam and reservoir systems is: **d. It reduces water loss through evaporation.** Reducing water loss through evaporation is generally considered an advantage of having a dam and reservoir system, as these structures can help to store water that might otherwise be lost to evaporation in more open water bodies. The other options listed are indeed disadvantages associated with dam and reservoir systems.