The process of degradation of humus and release of inorganic nutrients by microbes is called

Options

A. fragmentation
B. leaching
C. mineralization
D. humification

Answer

To solve the question regarding the process of degradation of humus and the release of inorganic nutrients by microbes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Humus**:
- Humus is a dark-colored, slightly acidic, amorphous substance formed from the decomposition of organic matter.

**Hint**: Humus is crucial for soil health and fertility.

2. **Decomposition Process**:
- Organic matter undergoes decomposition, where it is broken down into smaller fragments. This is the initial step before forming humus.

**Hint**: Decomposition involves various microorganisms that break down complex organic materials.

3. **Formation of Humus**:
- The smaller fragments from decomposition undergo further transformation to form humus through a process called humification.

**Hint**: Humification is essential for enriching soil with nutrients.

4. **Mineralization Process**:
- Once humus is formed, it can be further broken down by microbes, releasing carbon dioxide (CO2), water (H2O), and inorganic nutrients. This process is known as mineralization.

**Hint**: Mineralization is key for recycling nutrients in the ecosystem.

5. **Identify the Correct Term**:
- The question specifically asks for the process of degradation of humus and the release of inorganic nutrients. Based on our understanding, this process is termed **mineralization**.

**Hint**: Remember that mineralization is distinct from other processes like fragmentation, leaching, and humification.

### Final Answer:
The process of degradation of humus and the release of inorganic nutrients by microbes is called **mineralization**.