The Total solution for NCERT class 6-12
Birth Rate
Death Rate
It is the number of live births per thousand of population during a year for a particular region
It is the number of deaths per thousand of population during a year for a particular region
It is calculated using the following formula: CBR = Bi/P xlOOO Here, CBR = crude birth rate, Bi = Number of live births in a year, P = the estimated midyear population of that year.
It is calculated using the following formula: CDR= D/P xlOOO Here, CDR = crude death rate, D = Number of deaths in a year, P = the estimated midyear population of that year
If birth rate is more than death rate, it results in positive growth of population.
If death rate is more than birth rate it results in negative growth of population.