Which of the following organs aids in digestion?
a. liver
b. gall bladder
c. pancreas
d. all of these

Which must be kept in mind when determining if an explanation is correct? check all that apply.which must be kept in mind when determining if an explanation is correct? check all that apply.

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

Place the labels in order denoting the sequence of events of the cardiac cycle beginning with resting membrane potential and ending with the beginning of repolarization. the first and last steps are given.