Examlex
A small plastic ball has an excess negative charge on it.If a magnet is placed close to this ball,it will either attract or repel the ball,depending upon which pole is closer to the ball.
Building
A structure with a roof and walls, such as a house or factory, used for living, working, storage, or other purposes.
Scarce Resources
Resources that are limited in availability and cannot satisfy all wants and needs due to their limited supply.
Economics
The social science that studies how individuals, governments, firms, and nations make choices on allocating scarce resources to satisfy their unlimited wants.
Federal Government
The national government of a federated state, which holds the authority to govern at a level above individual states or provinces.
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