Please hellp i am struggling AND i dont even know the ans

Construct an explanation about the function of mitosis for multicellular organisms

Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings

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