Answer:
c) A study of how disease rates vary among different population groups
Explanation:
Epidemiology is the systematic and scientific study of the distribution of the health-related issue in a specified population.
The Epidemiologists studies the disease and its cause in a population by the collection of the data which gives an insight in the distribution of the health issues in the population living from a small area like school to a country.
The epidemiological studies help the society by reducing the risk of the negative health outcomes, in spreading awareness about the health issues and in framing the health policies.
Thus, Option-C is the correct answer.
The cost of energy to heat water to make steam is not a
negative environmental effect of using high pressure water hoses on rocky
coastlines to clean the spilled oil. Spilled oil cause environmental pollution
to the coastlines and endangers the species the lives of the species living in
these coastlines.
I believe a diet of 2,000 calories is used.
Hope that helped you.
