<span>The resource curse, also known as the paradox of plenty, refers to the paradox
that countries with an abundance of natural resources (like fossil
fuels and certain minerals), tend to have less economic growth, less
democracy, and worse development outcomes than countries with fewer
natural resources.</span>
Answer: They have larger ranges and thresholds.
Explanation: The rank-size rule defines range as the longest distance that a customer will travel to purchase a good or service. Threshold is the minimum market needed to support the supply of a product or service. It is assumed that customers which travel longer distances to purchase a higher-order good or service, and a provider of such goods and services will require a larger customer base to make a profit. Thus, higher-order services have larger ranges and thresholds.