Examlex
How long does the protostellar stage last for a star like our Sun?
Drunk Driver
An individual who operates a vehicle under the influence of alcohol, posing significant risks to safety and public health.
Economic Efficiency
A situation where resources are allocated in the most effective way from the standpoint of societal welfare.
Opportunity Cost
The cost of forgoing the next best alternative when making a decision or choosing one option over another.
Public Goods
Goods that are non-excludable and non-rivalrous, meaning they are available for everyone to consume without diminishing their availability to others, such as public parks and national defense.
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