Formation of tropical forests needs mean annual temperature and mean annual precipitation as

Options

A. `18 - 25^(@)C` and `150 - 400 cm`
B. `5 - 15^(@)C` and `50 - 100 cm`
C. `30 - 50^(@) C` and `100 - 150 cm`
D. `5 - 15^(@) C` and `100 - 200 cm`

Explanation

To answer the question regarding the formation of tropical forests and the required mean annual temperature and mean annual precipitation, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Tropical Forests**:
- Tropical forests are known for their high biodiversity, which includes a wide variety of plants and animals. This biodiversity is supported by specific climatic conditions.

2. **Temperature Requirements**:
- The mean annual temperature in tropical forests is typically warm. It is neither too low nor excessively high. The ideal range for the mean annual temperature is between **18°C to 25°C**. This temperature range allows for a stable environment conducive to the growth of diverse flora and fauna.

3. **Precipitation Requirements**:
- Tropical forests also require a significant amount of rainfall to sustain their ecosystems. The mean annual precipitation should be fairly high, ranging from **150 cm to 400 cm**. This high level of precipitation ensures that there is sufficient water available throughout the year, promoting high productivity among plant life.

4. **Conclusion**:
- Therefore, for the formation of tropical forests, the ideal mean annual temperature is **18°C to 25°C** and the mean annual precipitation is **150 cm to 400 cm**. These conditions are essential for supporting the rich biodiversity found in tropical forests.

### Final Answer:
The formation of tropical forests needs a mean annual temperature of **18°C to 25°C** and a mean annual precipitation of **150 cm to 400 cm**.

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