In a landmark epidemiological study of ambient air pollution and mortality in six U. S. cities, Dockery et al. (1993) found a higher mortality rate in the city with the highest pollution compared to the city with the lowest 2.6% 26% 260% 2600%

26%

Explanation:Mortality rate is another way to say death rate. It is a measure of the number of deaths due to a particular cause in a population.

Mortality rate is the total number of deaths from a particular cause in 1year ... the higher the death rate and the lower the birth rate, and the more likely the population will decline.

c

explanation:

i am pretty sure hopefully just you

c.) biotic: snails; abiotic: temperature climate