Examlex
The part of the heart that initiates each beat is the ____________________.
Mountain Range
A series of connected mountains aligned together, often formed by the same geological processes such as tectonic plate movement.
Oil Deposit
A subsurface reservoir containing petroleum that is naturally accumulated and can be extracted for economic use.
Internal Migrations
Refers to the movement of people within a country's borders, often for economic, social, or environmental reasons.
American West
A historical region and period in the United States characterized by westward expansion, frontier life, and the development of distinct cultural and societal norms.
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