Solution : People tend to concentrate in areas with moderate climatic conditions, that is areas that are neither too hot nor too dry and also with adequate precipitation to support life activities. The extremities of climate tend to push people away from the region and make the region less attractive for human inhabitation. In India western Rajasthan, which is characterized by high temperatures and dry conditions, is one of the least inhabited regions. The population density tends to be high in Uttar Pradesh, West Bengal, Bihar etc. because these regions have moderate temperature conditions with adequate precipitation therefore making the region conducive for population concentration.