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Explain the concept of a national park; in particular,discuss how a national park can be a habitat island.
Esophagus
The tube that connects the throat (pharynx) with the stomach, transporting swallowed food and liquids.
Sphincters
Circular muscles that constrict passages or openings in the body, regulating the flow of substances within various organs.
Cartilage
Firm, smooth, resilient, nonvascular connective tissue.
Fauces
Space between the cavity of the mouth and the pharynx.
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