Answer:
B) How often a disease occurs in a particular area or group of people
Explanation:
Epidemiologists study diseases in many different situations. Their main goal is to prevent diseases by using this information to plan and evaluate strategies.
Hope this helps!!! <33333
~Silver
ANSWER: Quaternary
just took the quiz on edge
They both have two types of DNA for twins
Human because human is the only organism on the list!