12 Class Geography Notes in hindi Chapter 3 Population Composition अध्याय - 3 जनसंख्या संघटन
CBSE Revision Notes for CBSE Class 12 Geography Chapter 03 Population Composition Class 12 Geography Chapter 03 Migration - spatial patterns and structure; determinants of population change. Age structure represents the number of people of different age groups. It can help us to know the number of working population and dependent populations.