Why are vestigial organs important in the concept of evolution?

Explanation

**Step-by-Step Solution:**

1. **Definition of Vestigial Organs**: Vestigial organs are body parts that have lost their original function through the course of evolution. They are remnants of structures that were functional in the ancestors of a species.

2. **Historical Context**: These organs provide evidence of the evolutionary history of organisms. For example, the human appendix is considered a vestigial organ because it is a remnant of a larger cecum that was used for digesting cellulose in the diets of our herbivorous ancestors.

3. **Evolutionary Significance**: The presence of vestigial organs supports the theory of evolution by demonstrating how species adapt over time. As organisms evolve, certain traits may become unnecessary for survival, leading to the gradual reduction or complete loss of those traits.

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