<span>These extra calories are needed by people with HIV because their immune system is constantly fighting off the HIV virus. This is because HIV attempts to evade the infection even as the immune system attempts to eradicate it. The extra calories give the immune cells, which are extra strained, the energy to perform their functions.</span>
The answer i would pick is <span>A. the presence of glaciers thats the correct answer
</span>
<span>The blood flows through hepatic portal vein traveling to the liver, then makes it another artery which is posterior vena cava making it to the heart. It makes itself afterward to the pulmonary artery where it reaches the lungs, going back to the heart via the pulmonary vein. Eventually, it goes to the kidney through different parts such as the aortic arch, dorsal aorta and the renal artery.</span>
<span>The purpose is to regulate cell division. Preventing it from occuring when it is not needed, and inducing it when it is.
</span>
Co-ordinate covalent bonding
