The difference between birth and death rates of a given population is referred to as the

The difference between birth and death rates of a given population is referred to as the "natural growth rate". This rate is the rate at which a population grows without any external influences such as immigration or emigration. The natural growth rate can be positive, indicating a population increase, or negative, indicating a population decrease. It is calculated by subtracting the death rate from the birth rate and expressing the result as a percentage. The natural growth rate is an important indicator of the health and wellbeing of a population and is closely monitored by governments and public health officials.