PLS HELP IM BEING TIMED!! What is described as the flow of positive charges that move from a positive terminal of the battery, through a circuit, and to the negative
terminal
O A conventional current
OB. electron flow
C. conventional circuit
D. electric circuit

d. electric circuit

Explanation:

Electric current is the flow of electrons from the high potential energy position to the lower potential energy position. Current flow is the direction a positive current would be traveling, or the opposite direction that electrons actually flow. A closed loop containing current flow is called an electric circuit.

/the trachea, commonly known as the windpipe

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.