Final answer:
Cities may face long-term water shortages as the amount of water generated by glacial melt will decline as glaciers shrink.
Step-by-step explanation:
The statement is true. Cities may indeed face long-term water shortages as the amount of water generated by glacial melt declines when glaciers shrink. Glacial meltwater serves as an important water source for many regions, providing freshwater to rivers and groundwater. Therefore, the shrinking of glaciers due to global warming could lead to a decrease in the availability of water in cities.