Which animal has a circulatory system with a three-chambered heart?
animals Salamander fur seals mammals alpacas a fish warm-blooded barnacles
A B C D E F G H
Frogs, toads and salamanders are amphibians.
Salamanders have a relatively complex circulatory system with a three-chambered heart.
Which animal has a circulatory system with a three-chambered heart? (A) animals (B) Salamander (C) fur seals (D) mammals (E) alpacas (F) a fish (G) warm-blooded (H) barnacles