Annual growth rate is: (A) Crude bih rate-Crude death rate, (B) Crude death rate-Crude bih rate, (C) Crude bih rate-Crude death rate x 100\/Crude bih rate, (D) Crude bih rate-crude death rate x 100\/Mid bih rate population
Answer is A. When crude death rate is substracted from crude bih rate , the net residual is current annual growth rate, exclusive of migration. Population growth rates like railway trains are subject to momentum. They sta slowly and gains momentum, once in motion, it takes time to bring momentum under control. Reference: Park&;s textbook of preventive and social medicine, 23rd edition, pg no: 481