Will give !
according to the cladogram shown, which two animal species shared the most recent common ancestor?
a. primates and crocodiles
b. birds and rodents
c. sharks and birds
d. birds and crocodiles

D.

Explanation:

A 'common ancestor' on a cladogram is all of those points where your lines come down and meet the primary line at the bottom.

In this case, your most recent common ancestor is at the point connected to the crocodile. All species at or past that point have that common ancestor, which include only the crocodile and the bird.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.