Question

What two different patterns of circulation are found in vertebrates

Answer 1

Land vertebrates developed lungs, a new vein (the pulmonary vein) to take blood from them to the heart, and a double circulation, whereby the heart is effectively divided into two halves—one-half concerned with pumping incoming deoxygenated blood from the body to the lungs and the other with pumping oxygenated blood

Step-by-step explanation:

Answer 2

Double circulation and coronary circulation

Step-by-step explanation:

land vertebrates developing a new way to take blood from the heart to the heart and a double circulation