What are the difficulties that you would face in classification of animals, if common fundamental features are not taken into account?

Explanation

### Step-by-Step Solution:

1. **Understanding Common Fundamental Features**:
- Common fundamental features are essential characteristics shared among groups of animals. They help in organizing and classifying the vast diversity of animal life.

2. **Difficulty in Individual Classification**:
- Without these common features, it would be impossible to classify every individual organism separately. The sheer number of species would make it impractical to study each one in isolation.

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