Which group of animals is known for having a three-chambered heart?

Which group of animals is known for having a three-chambered heart?

Correct Answer: Amphibians

Step 1: Understand what a heart is. The heart is an organ that pumps blood in animals.
Step 2: Learn about different types of hearts in animals. Some animals have different numbers of heart chambers.
Step 3: Identify the types of animals. There are groups like mammals, birds, reptiles, amphibians, and fish.
Step 4: Find out how many heart chambers each group has. Mammals and birds have four chambers, fish have two, and amphibians and some reptiles have three.
Step 5: Focus on amphibians. Amphibians include frogs, toads, and salamanders.
Step 6: Confirm that amphibians have a three-chambered heart, which has two atria (upper chambers) and one ventricle (lower chamber).

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