Which one of the following statements is totally wrong about greater biological diversity in tropics?

Options

A. Tropical latitude have remained relatively undisturbed for millions of years.
B. Tropical environment is more or less constant and predictable.
C. Soil here is very fertile.
D. More solar energy is available.

Answer

To solve the question regarding which statement is totally wrong about greater biological diversity in the tropics, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks us to identify which statement about biological diversity in the tropics is incorrect.

2. **Analyzing Option 1**:
- The statement is: "Tropical latitudes have remained relatively undisturbed for millions of years."
- This statement is generally considered true because tropical regions have had stable climates that have allowed for the evolution of diverse species over long periods.

3. **Analyzing Option 2**:
- The statement is: "Tropical environment is more or less constant and predictable."
- This statement is also true. The tropics experience less seasonal variation compared to temperate regions, leading to a more stable environment for species to thrive.

4. **Analyzing Option 3**:
- The statement is: "Swale hair is very fertile."
- This statement is incorrect. In tropical regions, especially in certain areas, the soil can be quite nutrient-poor due to leaching and other factors, making it less fertile than one might expect.

5. **Analyzing Option 4**:
- The statement is: "Solar energy is available."
- This statement is true. The tropics receive a high amount of solar energy throughout the year, which supports high levels of photosynthesis and biological productivity.

6. **Conclusion**: Based on the analysis, the statement that is totally wrong about greater biological diversity in the tropics is Option 3: "Swale hair is very fertile."

### Final Answer:
**Option 3: Swale hair is very fertile.**