👉 Cardioidea is a class of animals that includes mammals, birds, reptiles, and amphibians. They are characterized by having a heart that pumps blood throughout their bodies for respiration, oxygenation, and digestion.
👉 Cardioidea is a class of animals that includes mammals, birds, reptiles, and amphibians. They are characterized by having a heart that pumps blood throughout their bodies for respiration, oxygenation, and digestion.
