Which important component of fertile soil is missing from the following ?
Air, Water, Rock particles, Minerals, Living organisms.

Answer

To determine which important component of fertile soil is missing from the list provided (Air, Water, Rock particles, Minerals, Living organisms), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Fertile Soil**:
- Fertile soil is defined as soil that is capable of supporting plant growth effectively. It contains various components that contribute to its fertility.

2. **Identify the Components Listed**:
- The components listed are:
- Air
- Water
- Rock particles
- Minerals
- Living organisms

3. **Analyze Each Component**:
- **Air**: Necessary for root respiration.
- **Water**: Essential for plant hydration and nutrient transport.
- **Rock particles**: Provide structure and stability to the soil.
- **Minerals**: Supply essential nutrients for plant growth.
- **Living organisms**: Help in decomposing organic matter and improving soil structure.

4. **Identify the Missing Component**:
- While all the above components are crucial for soil fertility, one important component is not listed: **Humus**.
- Humus is the organic matter formed from the decomposition of dead plants and animals, and it plays a significant role in providing nutrients and improving soil structure.

5. **Conclusion**:
- The important component of fertile soil that is missing from the list is **Humus**.

### Final Answer:
The important component of fertile soil that is missing from the list is **Humus**.

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