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excludable
answer
if the supplier of that good can prevent people who do not pay from consuming it
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rival in consumption
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if the same unit of the good cannot be consumed by more than one person at the same time
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private good
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a good that is both excludable and rival in consumption
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nonexcludable
answer
the supplier cannot prevent consumption by people who do not pay for it
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nonrival in consumption
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if more than one person can consume the same unit of the good at the same time
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free-rider problem
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individuals have no incentive to pay for their own consumption and instead will take a free ride on anyone who does pay
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public good
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a good both nonexcludable and nonrival in consumption
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common resource
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good that is nonexcludable and rival in consumption: you cant stop others from consuming the good, and when they consume it, the less of the good is available for you
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overuse
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the depletion of a common resource that occurs when individuals ignore the fact that their use depletes the amount of he resource remaining for others
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artificially scarce good
answer
a good that is excludable but nonrival in consumption