Why is the advantage of having four chambered heart ?

Explanation

**Step-by-Step Solution:**

1. **Definition of a Four-Chambered Heart**:
A four-chambered heart consists of two atria (upper chambers) and two ventricles (lower chambers). This structure is found in mammals and birds.

2. **Clear Division of Labor**:
One of the main advantages of a four-chambered heart is the clear division of labor among its chambers. The atria are responsible for receiving blood, while the ventricles are responsible for pumping blood out of the heart. This specialization allows each chamber to perform its function efficiently without interference from the others.

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