A) migration
B) natality
C) emigration
D) mortality
Correct Answer: D
Solution :
Mortality is the death rate per thousand individuals. Motality rate decreases population size and population density. It is due to improved personal hygiene, sanitation and modern medicines. \[\therefore \,\text{Mortality}\,\text{=}\,\left( \text{100 }\!\!\times\!\!\text{ }\frac{\text{births}}{\text{deaths}} \right)\]
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