Answer : 45200000 = 4.52e+13
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
<span>Hydrocarbon structure</span>
Green light because it gives off positive energy
D is incorrect. They are not specifically restricted to terrestrial environments.
