The rate of natural increase in the human population is calculated by?

انسانی آبادی میں قدرتی اضافے کی شرح کا حساب کیسے کیا جاتا ہے؟

CDR - CBR

CBR - CDR

None of these

Both the crude birthrate (CBR) and the crude death rate (CDR)

the number of births or deaths which occur in a given year per 1000 population