Decribe the brief five different types …

The population is unevenly distributed. The areas of different types of low density are as under:

1. Difficult terrains and mountains: The areas including mountain ranges with steep slopes, rugged topography have the harsh climate do not attract population. Rocky surface, no soil and other problems also make them the regions of a very low density of population.
2. Hot deserts: These are Sahara, Kalahari, Thar, etc. where a low density of population is found because of scanty rainfall and very hot days. These factors do not attract people to settle there. The density of the population is less than 10 people/sq. km.
3. Cold deserts: These include the dry areas of Central Asia, Magnolia, and areas of Iran that have a low density of population. The extreme climate with scanty rainfall and hard life restricted population. In these areas, the average density is between 0-3 persons/sq. km.
4. Extremely cold and polar areas: In high latitudes around polar regions where snow and ice cover ground for the largest part of the year. Antarctica, a polar continent is total without any permanent inhabitant and the Tundra region around the North Pole have the negligible density of population.
5. Dense forest areas: Equatorial forests of Amazon and Zaire restrict people to settle therein. Extreme heat and humidity, marshy land surface and various diseases are the main obstacles for the people to settle there.