Sarah recently learned that o2 is found in the earth’s water bodies. she was amazed to know the proportion of o2 found in the ocean differs based on the water temperature. what fact did she find out? sarah recently learned that o2 is found in the earth’s water bodies. she was amazed to know the proportion of o2 found in the ocean differs based on the water temperature. she found out that parts of the oceans have a higher quantity of dissolved o2, whereas parts of the ocean have a lesser quantity of it.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.