Say True or False
Man has been able to identify and enlist nearly 2 million species of organisms out of nearly 10 million estimated to be existing upon the earth.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Statement**: The statement claims that man has identified and listed nearly 2 million species of organisms out of an estimated 10 million species existing on Earth.

2. **Identifying the Key Figures**:
- Identified species: 2 million
- Estimated total species: 10 million

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