Which body system performs this function in humans? A. circulatory system

B. excretory system

C. respiratory system

D. digestive system

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an

Which of the following is a testable hypotheses?

When the cell concentrates potassium within, against the natural tendency of matter, it is performing a.passive diffusion b.facilitated diffusion c.active transport d.pinocytosis