Examlex
The gas in a planetary nebula is composed of
Services Society
A society where the economy is significantly driven by the provision of services rather than the production of goods.
Freshwater
Refers to water bodies like lakes, rivers, and ponds that have low salt concentrations compared to seawater.
Scarce
In short supply; a resource is scarce when there is not enough of the resource available to satisfy all the various ways a society wants to use it.
Physical Capital
The tangible assets that are used in the production of goods and services, including buildings, machinery, and equipment.
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