Examlex
Select the term that is spelled correctly and give its meaning.
-A. traychea
B. trachea
A or B: ____ meaning: __________.
Nonexcludable
A characteristic of public goods where it is not possible to prevent anyone from accessing and using the good.
Clean Air
Air that is free of pollutants and contaminants, considered essential for health and environmental quality.
Public Good
A good that is non-excludable and non-rivalrous, meaning it can be consumed by many people without diminishing its availability to others.
National Defense
The protection and defense of a country against foreign threats and aggression, typically through military means.
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