What are Natural classification systems and who developed first such system?

Explanation

### Step-by-Step Solution:

1. **Definition of Natural Classification System**:
- A Natural Classification System is a method of classifying organisms based on their evolutionary relationships. It focuses on the connections between organisms that share a common ancestor.

2. **Basis of Classification**:
- This system classifies organisms according to their descent from a common ancestor, emphasizing the relationships between ancestors and descendants. It relies on vegetative characters, which are traits that are stable and do not change with environmental conditions.

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