Will give 100 points in this equation for photosythesis where does the second reactant come from and what happens to it in the photosynthetic process?
6co2 + 6h2o ==> c6h12o6 + 6o2

a. water is split to drive nadp to nadph conversion and it is formed in the calvin cycle. b. oxygen is released as a gas after water is split . c. carbon dioxide comes from the air and is broken down in the calvin cycle . d. glucose is formed right after the calvin cycle.

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.