How does the phylogeny of horse prove the process of evolution?

Explanation

### Step-by-Step Solution:

1. **Understanding Phylogeny**: Phylogeny refers to the evolutionary history and the relationships among a group of organisms. In the case of horses, it traces the lineage from their ancestors to modern-day horses.

2. **Identifying Ancestral Horses**: The ancestors of modern horses include species like Eohippus and Mesohippus. These primitive horses had distinct characteristics such as shorter height, smaller molars, and shorter limbs compared to contemporary horses.

3. **Evolution of Physical Traits**: Over time, horses underwent significant changes:
- **Increase in Height**: Horses evolved to become taller, which is advantageous for running.
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