Answer:
he outbreak and spread of epidemic diseases, such as swine flu, are tracked by a(n) epidemiologist.
The person who would use equipment to show an image of a baby before birth is a(n) sonographer.
The education to become a(n) doctor requires more than four years of college.
When a water source becomes contaminated with an illness-causing bacteria, a(n) microbiologist could be brought in to study how to get rid of the microorganisms.