Which of the following is related to integrated waste water treatment process within a natural system?

Options

A. The system created by Ramesh Chandra Dagar
B. Jhum cultivation
C. Formation of polyblend
D. Friends of Arcata Marsh (FOAM)

Answer

To solve the question regarding which option is related to the integrated wastewater treatment process within a natural system, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Integrated Wastewater Treatment**:
- Integrated wastewater treatment involves using natural systems to treat wastewater. This process typically includes sedimentation, filtration, and biological treatment using marshes, algae, fungi, and bacteria.

2. **Analyze Each Option**:
- **Option A: System created by Ramesh Chandra Dagar**:
- This system is related to organic farming and not specifically to wastewater treatment. Therefore, it is not the correct option.

- **Option B: Jhoom Cultivation**:
- Jhoom cultivation, also known as shifting cultivation or slash-and-burn agriculture, involves burning vegetation to clear land for crops. This method does not pertain to wastewater treatment. Hence, it is not the correct option.

- **Option C: Formation of Polyblend**:
- The formation of polyblend refers to the recycling of plastics into a renewable or degradable form. This is related to waste management but not specifically to wastewater treatment. Thus, it is not the correct option.

- **Option D: Friends of Arcata Marsh (FOAM)**:
- This group is associated with the management of marshes that utilize algae, fungi, and bacteria to purify water. This aligns directly with the concept of integrated wastewater treatment within a natural system.

3. **Conclusion**:
- Based on the analysis, the correct answer is **Option D: Friends of Arcata Marsh (FOAM)**, as it directly relates to the integrated wastewater treatment process using natural systems.