Examlex
Strive for a 10:1 ratio (or better) of children to a computer to encourage computer use, cooperation, and equal access by girls and boys.
Marginal Social Benefit
The additional benefit to society from one more unit of a good or service being produced and consumed.
Marginal Social Cost
The additional cost incurred by society as a whole from producing one more unit of a good or service, including both private costs and any externalities.
Pollution
The introduction of harmful substances or products into the environment, causing adverse effects.
External Benefit
A positive effect experienced by a third party due to an economic transaction they were not directly involved in.
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