Which of the above characteristics would be most in developing a classification system for the fish?

a.

body color and tail shape

b.

body color and number of fins

c.

number of fins and presence of scales

d.

presence of scales and tail shape

its A. body color and tail shape on study island

Explanation:

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.