听力背景知识50篇：33.Mountains

33. Mountains山脉 [00:02.09]Mountains are a type of landforms [00:05.41]that are characterized by a higher elevation, [00:08.59]in comparison to the surrounding areas. [00:11.45]They are higher than 600 meters, [00:14.21]and taller than the hills. [00:16.22]The world&`&s tallest mountains are located in Asia [00:20.32]and the largest range of mountains [00:22.71]is present in the Atlantic Ocean. [00:25.26]Some of the highest mountain peaks are located in the oceans. [00:29.69]Mountains represent varying climatic conditions [00:33.92]based on their height. [00:35.16]For example, in case of a tall mountain, [00:38.73]the conditions at the base differ from the top of the mountain. [00:42.53]In comparison to the mountain base, [00:45.18]the top portion is colder and there is less oxygen [00:49.06]and less protection from the sun&`&s rays. [00:51.61]It is estimated that half of the world population [00:55.90]depends on mountains for water. [00:58.55]In fact, the major rivers of the world are fed by mountains. [01:03.20]Many mountains have glacial lakes [01:06.20]that are formed due to melting of the glaciers.