the right answer is B- energy from magma at divergent boundaries are cleaner
It goes
Cell -> Tissue -> Organ -> Organ System -> Organism
So the answer would system level :)
If you’re talking about a literal vitamin then I’d say vitamin B-12 because this is usually stored int our liver for later reasonings.
If you include minerals as well, calcium is a main storage for your bones
Oxidative phosphorylation relies on the hydrogen ion concentration gradient generated and maintained by the electron transport chain.
Hydrogen ions are actively transported out of the mitochondrial matrix.
Hydrogen ion concentration is higher in the intermembrane space than in the mitochondrial matrix.
In fetal life, the lungs are not expanded, so most of the blood from the right ventricle is shunted from the pulmonary artery to the aorta through the patent ductus arteriosus. With a few breaths the lungs expand, and blood flows from right ventricle to pulmonary artery into the lungs. Withdrawal of circulating prostaglandin from the mother plus bradykinins released from the expanding lung of the infant cause the ductus to close over a few minutes to hours. The closed ductus remains as the ligamentum arteriosum.
