Google would have the best answer choice for this question. sorry i couldnt help you.
Answer:
In layman's terms, epidemiologists work to answer the “who, what, where, when, and whys” of the field. Epidemiologists study the distribution and determinants of health-related outbreaks. ... Most epidemiologists today hold a Master's in Public Health (MPH), though some have a doctoral degree in epidemiology as well.
Explanation:
PRESS THE CROWN
Answer: The charges of the objects are A: Positive and B: Negative.
Explanation-
The electric field lines are pictorial representation of the electric field in terms of imaginary lines.
The direction of electric field is away from the positive charge and is directed towards the negative charge.
In this question, the electric field lines are emerging from A and coming towards B.
Thus, the right answer is A: Positive and B: Negative.