Definition

There is no universally accustomed analogue of a mountain. Elevation, volume, relief, steepness, agreement and chain accept been acclimated as belief for defining a mountain.2 In the Oxford English Dictionary a abundance is authentic as "a accustomed acclivity of the apple apparent ascent added or beneath abruptly from the surrounding akin and attaining an distance which, almost to the adjoining elevation, is absorbing or notable."2



Whether a landform is alleged a abundance may depend on acceptance amid the bounded people. The accomplished point in San Francisco, California, is alleged Mount Davidson, admitting its acme of 300 m (980 ft), which makes it ten anxiety abbreviate of the minimum for a abundance by American designations.citation needed Similarly, Mount Scott alfresco Lawton, Oklahoma is alone 251 m (823 ft) from its abject to its accomplished point

.

Definitions of "mountain" include:3

Height over abject of at atomic 2,500 m (8,202 ft

);

Height over abject of 1,500 m (4,921 ft).–2,500 m (8,202 ft). with a abruptness greater than 2

degrees

Height over abject of 1,000 m (3,281 ft).–1,500 m (4,921 ft). with a abruptness greater than 5 degrees

Local (radius 7,000 m (22,966 ft). acclivity greater than 300 m (984 ft)., or 300 m (984 ft)–1,000 m (3,281 ft). if bounded (radius 7,000 m (22,966 ft). acclivity is greater than 300 m (984 ft

).

By this definition,which? mountains awning 64% of Asia, 25% of Europe, 22% of South America, 17% of Australia, and 3% of Africa. As a whole, 24% of the Earth's acreage accumulation is aerial and 10% of bodies alive in aerial regions.4 Most of the world's rivers are fed from abundance sources, and added than bisected of altruism depends on mountains for water.56