12 points!

what 4 factors do cells vary by?

any is greatly appreciated, you : d

Urgent. the table shows the relative blood flow through some organs in the human body that is, the percentage of blood that flows through a given organ, through which organ(s) does all the blood flow? explain the effect of exercise on blood flow to skeletal muscles.

Can someone i have no idea of how to do this.

A(n) is a molecule influences the way that a molecule reacts.