Examlex
In the 19th century, geologists developed the geologic time scale using
Externality
An economic side effect of a good or service that generates benefits or costs to someone other than the person deciding how much to produce or consume.
Activity
Any action or task undertaken by individuals or groups, often resulting in production or consumption of goods or services.
External Costs
Costs of economic activities that affect third parties outside the transaction, which are not reflected in market prices.
Tax
A compulsory financial charge or levy imposed by a government on individuals or entities to fund public expenditures.
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