Sometimes in the mountains, people start bleeding from the nose and mouth, because
Sometimes in the mountains, people start bleeding from the nose and mouth because atmospheric pressure decreases with increase in altitude. This decrease in pressure can cause blood vessels in the nose and mouth to rupture due to the reduced external pressure, resulting in bleeding.
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Sometimes in the mountains, people start bleeding from the nose and mouth because atmospheric pressure decreases with increase in altitude ; option [D]. As altitude increases, the air becomes less dense, leading to lower atmospheric pressure. However, blood pressure does not directly cause this phenomenon. Instead, the decreased atmospheric pressure at higher elevations can cause blood vessels in the nose and mouth to rupture, resulting in bleeding.