Examlex
What is the origin of the rings of gas that surround SN 1987A?
Common Resources
Resources that are available to all members of a society but have limited availability, leading to potential overuse.
Free-rider Problem
The free-rider problem occurs when individuals consume a good without paying for it, under the assumption that others will cover the cost, typically in the context of public goods.
Nonpayers
Individuals who benefit from goods, services, or resources without contributing to their production or cost, often in the context of public goods.
Market Failure
A situation where the allocation of goods and services is not efficient, often leading to a net social welfare loss.
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