Examlex
What elements on the periodic table are the products of supernovae and how did this happen?
Public Good
A product or assistance made available to all societal members without financial gain, provided by either state bodies or voluntary private groups or individuals.
Nonrival
A characteristic of a good whereby one person's consumption does not reduce its availability to others.
Nonexcludable
A characteristic of a good or service that prevents the owner or provider from excluding individuals from using it once it has been provided.
Marginal Private Benefit
The additional benefit received by a consumer or producer from consuming or producing one more unit of a good or service.
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