Question

Which of the following statement is true?

(i) CBR = Bi/P × 1000

(ii) COR = D /P × 1000

(iii) If birth rate is more than death rate, then CBR results in positive growth of population.

विकल्प

• Only ii

• i and ii

• ii and iii

• i, ii and iii

Answer 1

i, ii and iii

Explanation:

Distinguish between Birth rate and Death rate:

Birth Rate	Death Rate
It is the number of live births per thousand population for a given region in a given year.	It is the number of deaths per thousand people in a given region during a given year.
The following formula is used to calculate it: CBR = Bi/P × 1000 CBR denotes the crude birth rate, Bi denotes the number of live births in a year, and P denotes the estimated midyear population for that year.	The following formula is used to calculate it: CDR= D/P × 1000 CDR denotes the crude death rate, D denotes the number of deaths in a year, and P denotes the estimated midyear population for that year.
When the birth rate exceeds the death rate, population growth is positive.	When the death rate exceeds the birth rate, population growth is negative.