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The Darhad valley of Mongolia
The Darhad valley of Mongolia

Duration: 02:16

The nomads of the Darhad valley in Mongolia use their knowledge of the carrying capacity of the land to determine when they should migrate.
Nomadic, Mongolia, permafrost, glaciers, carrying capacity, grazing, soil exhaustion
 
World population: is it out of control?
World population: is it out of control?

Duration: 01:07

An introduction to world population change and the implications of over-population.
population, demographics, change, growth, UK, Japan, trends, ecological footprint, carrying capacity
 
The River Severn - upper course
The River Severn - upper course

Duration: 04:28

A description of the River Severn along its upper course. The river transports a large load, which allows rapid erosion to take place - waterfalls and gorges have been formed in the upper course.
valley, moorland, source, depressions, saturated ground, stream, rivulet, V-shaped valley, carrying capacity, load, waterfall, rock, gorge, meanders, oxbow lake, river cliff, deposition, floods
 
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