Which type of pathogen is of greatest concern to epidemiologists?

one that is less virulent and less contagious
one that is more virulent and more contagious
one that is more virulent and less contagious
one that is less virulent and more contagious

What does homeostasis means in biology?

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. this type of feedback mechanism best describes a positive or negative