Final answer:
A mountain can serve as a barrier, windbreak, and boundary.
Step-by-step explanation:
A mountain can serve as a barrier, windbreak, and boundary. As a barrier, a mountain can block the movement of people, animals, and weather patterns across its slopes. For example, the Himalayas act as a major barrier between the Indian subcontinent and the rest of Asia. As a windbreak, a mountain can protect areas on its leeward side from strong winds. And finally, a mountain can serve as a boundary between different regions or countries, marking a natural division between them.
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