The difference between an artery and a vein is that arteries are larger, more muscular and more elastic than veins; they carry blood that is under pressure from having been pumped out of the heart; veins are under much less pressure, so they are not as strong
The si unit for time is the second
They are water soluble and poured down the drain with the water.
U got this so open your book/notes and look for the answer stop being lazy
