Greater biological diversity of tropics than temperate regions is due to the

Options

A. Presence of more seasonal enviroment
B. Frequent glaciations in the past
C. Highly variable climate and availability of less solar energy in the past
D. Availability of more solar energy which contributes to higher productivity

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks why the tropics have greater biological diversity compared to temperate regions.

2. **Analyzing the Options**: We have four options to consider:
- Option 1: Presence of more seasonal environment.
- Option 2: Frequent glaciation in the past.
- Option 3: High variable climate and availability of less solar energy in the past.
- Option 4: Availability of more solar energy which contributes to higher productivity.

3. **Evaluating Each Option**:
- **Option 1**: The tropics have less seasonal variation compared to temperate regions, making this option incorrect.
- **Option 2**: Temperate regions have undergone glaciation, while tropical regions have remained undisturbed, making this option incorrect.
- **Option 3**: The tropics experience a more stable climate with higher solar energy, so this option is also incorrect.
- **Option 4**: This option states that the availability of more solar energy leads to higher productivity, which is true. The tropics receive more solar energy, promoting higher productivity and thus greater biodiversity.

4. **Conclusion**: Based on the evaluation, the correct answer is Option 4: "Availability of more solar energy which contributes to higher productivity."

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