What occurs when physical barriers divide a population

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)