Which is a cause of the buildup of static electricity? A. Friction between two electrically neutral objects
B. Contact between an electrically positive object and an electrically
negative object
C. The flow of electrons between two conducting objects
D. The transfer of heat from a warmer object to a cooler object

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.

youre right there are

a. an idea which cannot be disproven!

explanation: