Among the following biogeochemical cycles, which one does not have losses due to respiration?
1. Phosphorus
2. Nitrogen
3. Sulphur
4. All of the above

Options

A. Phosphorus
B. Nitrogen
C. Sulphur
D. All of the above

Explanation

To solve the question regarding which biogeochemical cycle does not have losses due to respiration, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Biogeochemical Cycles**:
- Biogeochemical cycles are natural pathways through which essential components of the environment (like nutrients) circulate through different layers of the biosphere.

2. **Identify the Cycles Mentioned**:
- The question lists three cycles: Phosphorus, Nitrogen, and Sulfur. We need to analyze each of these in relation to respiration.

3. **Define Respiration**:
- Respiration is a biological process where organisms utilize oxygen (O2) and produce carbon dioxide (CO2). This process is significant in the carbon and oxygen cycles.

4. **Analyze Each Cycle for Losses Due to Respiration**:
- **Phosphorus Cycle**: Phosphorus is not involved in respiration. It mainly cycles through soil, water, and living organisms without being lost through respiratory processes.
- **Nitrogen Cycle**: While nitrogen is essential for life, it is not directly involved in respiration in the same way as oxygen and carbon dioxide. Thus, it does not have losses due to respiration.
- **Sulfur Cycle**: Similar to nitrogen, sulfur compounds are not involved in the respiratory process and therefore do not experience losses due to respiration.

5. **Conclusion**:
- Since none of the cycles (Phosphorus, Nitrogen, or Sulfur) experience losses due to respiration, the correct answer is that all of the above cycles do not have losses due to respiration. Therefore, the answer is option 4: "All of the above."

### Final Answer:
**4. All of the above**