Respuesta :
Answer:
Blood.
The heart.
The right side of the heart.
The left side of the heart.
Blood vessel.
Arteries.
Capillaries.
Veins.
Answer:Birds, like mammals, have a 4-chambered heart (2 atria & 2 ventricles), with complete separation of oxygenated and de-oxygenated blood. The right ventricle pumps blood to the lungs, while the left ventricle pumps blood to the rest of the body.
Explanation: