Explanation:

- Barter exchange relies on the double coincidence of wants. Both parties need to want exactly what the other has at the same time. This limits exchanges significantly.

- It lacks a store of value. Goods in barter can be perishable or may lose value over time, making it hard to save wealth.

- There’s no common measure of value. It's hard to compare the worth of different goods and services without a common metric.

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