Give one significant contribution of each of the following :
John Ray

Explanation

**Step-by-Step Solution:**

1. **Identify the Scientist**: The question asks for the significant contribution of John Ray, a notable figure in the field of biology.

2. **Understand His Contributions**: John Ray is known for several key contributions to botany and the classification of plants.

3. **Foundation of Classification**: One of his most significant contributions is that he laid the foundation for the classification of plants. This was a crucial step in the development of taxonomy.

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