Age of earth is about

Options

A. 4.5 to 5.5 million years
B. 45 million years
C. 4.5 to 5 billion years
D. 45-55 billion years Evolution

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the age of the Earth. It is important to know the approximate age based on scientific estimates.

2. **Evaluating the Options**: The options provided are:
- 4.5 to 5.5 million years
- 45 million years
- 4.5 to 5 billion years
- 45 to 55 billion years

3. **Eliminating Incorrect Options**:
- The first option (4.5 to 5.5 million years) is too young for the age of the Earth. The Earth is much older than this.
- The second option (45 million years) is also incorrect as it underestimates the age of the Earth.
- The last option (45 to 55 billion years) is not plausible since the universe itself is estimated to be around 13.8 billion years old.

4. **Identifying the Correct Age**: Based on scientific research, the age of the Earth is estimated to be approximately 4.543 billion years. This falls within the range of 4.5 to 5 billion years.

5. **Conclusion**: Therefore, the correct answer is the third option: **4.5 to 5 billion years**.

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