Why amphibians have three chambered heart?

More Questions

• What are the advantages of having four chambered heart?
• What is the advantage of four chambered heart?
• What is the advantage of having four chambered heart?
• What is the difference between heart attack and heart failure?
• What is the heart rate during heart attack?
• What are the three questions of the king?
• What is the difference between heart rate and pulse?
• Why is blood circulation in human heart called double circulation?
• Why did the king want to know the three questions?
• What is the meaning of white heart?