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Which of the following are not protozoans?
Labor
Human endeavors, involving both bodily and mental work, employed in generating goods and offering services.
Natural Resources
Materials or substances occurring in nature which can be exploited for economic gain, such as forests, minerals, and water.
Domestic Price
The price of goods or services within a country's borders, as opposed to international or import/export prices.
World Price
The international market price of a good or service, influenced by global supply and demand.
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