Add each of the following.a. (-2) + (-5) = b. (-9) + (+6) =c. (+6) + (+8) =d. (+10) + (-7) =

Freshly oxygenated blood returns to the heart via the:

A) aorta. B) vena cavae. C) pulmonary vein. D) pulmonary artery.

The apex is part of the ears.

Answer the following statement true (T) or false (F)