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Question 4 Mountaineers carry oxygen cylinders with them because : a) There is no oxygen on high mountains. b) There is deficiency of oxygen on mountains at high atltitude. c) oxygen is used for cooking. d) oxygen keeps them warm at low temperature. |
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Answer» Question 4 Mountaineers carry oxygen cylinders with them because : a) There is no oxygen on high mountains. b) There is deficiency of oxygen on mountains at high atltitude. c) oxygen is used for cooking. d) oxygen keeps them warm at low temperature. |
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