Based on this table that lists the advantages and disadvantages of dam-and-reservoir systems, name one advantage and one disadvantage that are most important. Explain why you think each of those is most important. Answer in complete sentences and make sure you include one advantage and one disadvantage.

Using Dam-and-Reservoir Systems (10.7)
Advantages
Disadvantages
Provides irrigation water aboveand below dam
Flooded land destroys forests or cropland and displaces people
Provides water for drinking
Large losses of water through evaporation
Reservoir useful for recreation and fishing
Deprives downstream cropland and estuaries of nutrient-rich salt
Can produce cheap electricity (hydropower)
Risk of failure and devastating downstream flooding
Reduces downstream flooding of cities and farms
Disrupts migration and spawning of some fish