20 POINTS 20 POINTS The following chart shows the average life expectancy for citizens of the United States. Life expectancy for each year is the life span a person could expect if the death rate stayed forever at the value it had during that year.

What can be known or predicted from this chart?

A.

the actual average lifespan of people born in 1980

B.

the age at which a particular person will die

C.

the probable life expectancy in the US in 2007

D.

the probable population of the US in 2007

the probable life expectancy in the US in 2007

Explanation: not sure the explanation but just got it the letters of A, B, C, D, doesnt matter so make sure you look at the sentences,

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.