Final answer:
Mortality refers to the death rate and it is a measure of the number of deaths in a population, often expressed per 100,000 individuals.
Step-by-step explanation:
Mortality is defined as the death rate within a population. When measuring the impact of a disease, it's important to consider both the morbidity rate, which refers to the occurrence of the disease, and the mortality rate. The mortality rate is often expressed as a percentage of the population or as the number of deaths per 100,000 individuals, which allows for comparisons across different populations and time periods. Not to be confused with disease prevalence or life expectancy, mortality specifically addresses deaths due to certain causes, including diseases, within a given timeframe.