Explanation:
under what circumstance does a negative cell presents An antigen to another negative cell
<span>Known as biodiversity, the more diverse a habitat and its population, the better the community production and resistance to danger or change.</span>
Answer:
4. rectus femoris
Explanation:
This muscle is nearest to the top of the thigh and is the most end; nearer the head of the pig in the quadricep.
It actions help to extend the lower leg and knee, stretch the hip.
<span>The </span>function of the valves<span> in the peripheral </span>veins<span> is to ensure that the overall movement of blood in the </span>veins<span> is in the right direction, toward the heart. This is especially important in the </span>legs<span>, where the blood must flow a relatively long distance against gravity. </span>