Mountains cover about 27 percent of the total area of the earth, and they play a critical role in the development of the world and its economic growth.
Mount consists of a soil and rock, which rises to a height of several hundred meters. So on the one hand, it is difficult to build a house on the mountain, but on the other hand the mountain has advantages such as beautiful scenery and fresh air.
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Acceptable to hold the mountain sports like skiing, trekking and mountaineering.
The mountain is a place with an unusual view so many resorts in the mountains or slopes.
The mountains there are different animals than on the plain, like mountain goats, leopards, hyraxes and more.
The highest mountain in the world is Mount Everest, which its peak is 8,848 metres (29,029 ft) above sea level.
The UN declared a day of mountain on December 11, to promote awareness and debate about the importance of mountains and dealing with the life of communities around the world on the mountain as its ecological conservation.