Linked from
The 14 pages that link to Mortality rate, each with the reason it gives.
DeathRelated: Counting deaths makes the concept usable in population health analysis.
Population dynamicsRelated: Deaths reduce abundance and can vary with age, density, and environment.
Population declineRelated: Deaths outnumbering births can make a population shrink.
EpizootiologyRelated: Mortality measures the fatal impact of disease across an animal population.