I think the answer is a cell..
1st of all arteries have a thick walls while veins have have a thin wall
Answer to why arteries have thick walls: arteries have thick walls because blood flows inside them with high pressure and with a high speed
Water is a polar molecule
Brainliest answer please
Your genotype<span> is your complete heritable genetic identity; it is your unique genome that would be revealed by personal genome sequencing. However, the word ...</span>