The keeps the urethra closed when urine is not being passed from the bladder and prevents leaking between voiding.

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

What is the phylum of soft bodied animals with a true bosy cavity and a three part body consisting of a foot visceral mass and a mantle

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences