Answer: for humans, population density is the number of people per unit of area, usually quoted per square kilometer or square mile (which may include or exclude, for example, areas of water or glaciers
reasons for being high density of population in monsoon climate region are
The tropical monsoon climate experiences abundant rainfall like that of the tropical rain forest climate, but it is concentrated in the high-sun season. Being located near the equator, the tropical monsoon climate experiences warm temperatures throughout the year.
Main characteristic features of the tropical monsoon type of climate are: In tropical monsoon type of climate, there are two dry seasons with low rainfall. For example in India, summers and winters are dry with only little rainfall.