Question

Why do all the animals having four chambered heart have Double circulation?

Answer 1

Answer:

Double circulation is the most efficient way of circulation. Here, in humans, the four-chambered heart, arteries, veins, and capillaries all have a vital role to play. Blood gets pumped out of the heart. This blood goes to different organs and then blood again comes back to the heart.

Answer 2

Answer:

Double circulation is the most efficient way of circulation. Here, in humans, the four-chambered heart, arteries, veins, and capillaries all have a vital role to play. Blood gets pumped out of the heart. This blood goes to different organs and then blood again comes back to the heart.......☺

Explanation:

$</p><p><svg width="300" height="300" viewBox="0 0 100 100"></p><p> </p><p> <path fill="red" d="M92.71,7.27L92.71,7.27c-9.71-9.69-25.46-9.69-35.18,0L50,14.79l-7.54-7.52C32.75-2.42,17-2.42,7.29,7.27v0 c-9.71,9.69-9.71,25.41,0,35.1L50,85l42.71-42.63C102.43,32.68,102.43,16.96,92.71,7.27z"></path></p><p> </p><p> <animateTransform </p><p> attributeName="transform" </p><p> type="scale" </p><p> values="1; 1.5; 1.25; 1.5; 1.5; 1;" </p><p> dur="1s" </p><p> repeatCount="indefinite"> </p><p> </animateTransform></p><p> </p><p></svg></p><p>$