<span>The correct statement is letter C. All arteries except the pulmonary artery carry oxygen-rich blood. Most arteries are responsible for the delivery of oxygen and nutrients to all cells and the pulmonary veins are the one who transfer oxygenated blood from the lungs to the heart.</span>
A vaccine can help keep people healthy and protect them from a certain virus. For example people in the United States get the flu shot when they get this shot the vaccine wont magically get rid of the virus but rather help them fight it off and protect them in the future if they keep up to date getting the vaccine
<span>Adopt ecological conservation practices :)</span>
C.there is no relationship between metabolic rate and body temperature.
The answer is D. The sugar belongs to carbohydrates. The lipids is consisted of glycerol and fatty acid. The proteins is consisted of amino acids. The nucleic acids is consisted of nucleotide.