Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Knowledge Indian Geography Indian Economic and Human Geography
Three main factors of population changes are:
1
Birth, death and marriage
2
Migration, birth and death
3
Marriage, migration and birth
4
More than one of the above
5
None of the above