The age-sex structure of a population refers to the number of females and males in different age groups. An age sex pyramid or population pyramid is used to...
The demographic transition theory studies the relationship between economic development and population growth. It discusses about changes in birth rate and death rate and consequently growth rate of...
Most of the coal mined in India comes from the rock formations of two geological ages viz. Lower Gondwana and Tertiary. About 80 per cent of the coal...
The Western Ghats or Sahyādri runs north to south along the western edge of the Deccan Plateau, and separates the plateau from a narrow coastal plain along the...
A recurring characteristic of the climate is called Climatic Pattern. The gap between two recurrences may be from one year to as long as tens of thousands of...
