As evident from fossil records which era has no life `?`

Options

A. Azoic
B. Proterozoic
C. Paleozoic
D. Coenozoic.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which era, as evident from fossil records, has no life.

2. **Analyzing the Options**:
- **Option 1: Azoic Era**: This is known as the oldest and longest era in Earth's history. It is characterized by a lack of life forms due to the absence of oxygen in the atmosphere.
- **Option 2: Proterozoic Era**: This era saw significant changes, including the development of primitive life forms like blue-green algae, indicating the presence of life.
- **Option 3: Paleozoic Era**: This era was marked by major geological and biological changes, including the appearance of the first vertebrates, which also indicates the presence of life.
- **Option 4: Cenozoic Era**: This is the current era, known as the Era of Mammals, which is characterized by abundant life forms, particularly mammals.

3. **Identifying the Correct Answer**:
- The Azoic Era is characterized by the absence of life due to the lack of oxygen. Therefore, it is the correct answer to the question.

4. **Conclusion**: The era that has no life, as evident from fossil records, is the **Azoic Era** (Option 1).

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