Answer:
Positive growth of population takes place when the birth rate is more than the death rate between two points of time or when people from other countries migrate permanently to a region. Geographical Factors that influence the distribution of population in the world: (i) Availability of water: Availability of water is very important in determining the population of a given area. Water is the basic necessity for several purposes including irrigation, industries, transport and domestic affairs. Rivers are the source of fresh clean water as a result; most of the population is concentrated in the river valleys. (ii) Landforms: Terrain is one of an important factor which influences the concentration and growth of population, plain areas has higher density of population as compared to mountain regions. The steep slope in mountain areas restrict the availability of land for agriculture, development of transport, industries and other economic activities which discourage concentration of population. (iii) Climate: Climatic factors such as rainfall and temperature play the most important role in determining the population of an area. Extremes of climate discourage the concentration of population. Climates include the too cold climate of Himalayas, and the too hot and dry climate of the Thar Desert. A moderate climate, on the other hand, is favourable for population. (iv) Soils: Soil is an important factor in determining the density of population. Fertile soil supports higher population density while infertile soil leads to low density. In the northern plain of India, the soil is regularly enriched by annual floods of the rivers like the Indus, the Ganga and the Brahmaputra and their tributaries. Therefore, this area has high population density. On the other hand, desert soils, mountain soils laterite soils are infertile so there is low densities in those areas.
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