Examlex
There is often more than one objective in linear programming problems.
Subsistence
refers to the means by which individuals or societies fulfill their basic needs for survival, such as food, shelter, and clothing, often through direct methods like farming, hunting, or gathering.
Natural Resources
Materials or substances that occur in nature and can be used for economic gain, such as minerals, forests, water, and fertile land.
Birthrate
The number of live births per 1,000 people in a population over a specified period, often used as an indicator of demographic trends.
U.S. History
The study of the history of the United States of America from its founding to the present day, focusing on major events, figures, and social changes over time.
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