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, we need to understand the processes involved in the degradation of humus and the release of inorganic nutrients by microbes. Here’s a step-by-step breakdown:

### Step 1: Understand Humus
Humus is a dark-colored, amorphous substance formed from the decomposition of organic matter. It serves as a reservoir of nutrients in the soil.

**Hint:** Remember that humus is a product of decomposition and is crucial for soil fertility.

### Step 2: Identify the Process of Formation
The formation of humus occurs through a process called humification, where complex organic matter is broken down into simpler substances, leading to the creation of humus.

**Hint:** Humification is the process that creates humus, but we are looking for what happens to humus after it is formed.

### Step 3: Understand Decomposition
Decomposition is the breakdown of organic matter into simpler substances. It involves various processes, including fragmentation, where larger pieces of organic matter are broken down into smaller particles.

**Hint:** Fragmentation is just one part of the decomposition process, focusing on breaking down materials into smaller sizes.

### Step 4: Explore the Role of Microbes
Microbes play a crucial role in the degradation of humus. They break down humus further, leading to the release of inorganic nutrients such as nitrogen, phosphorus, and potassium back into the soil.

**Hint:** Microbes are essential for recycling nutrients in the ecosystem.

### Step 5: Identify the Correct Term
The specific process of degradation of humus by microbes that results in the release of inorganic nutrients is known as mineralization. In this process, organic matter is converted into inorganic forms that plants can readily absorb.

**Hint:** Mineralization is the key term that describes the conversion of organic nutrients into inorganic forms.

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

**Final Answer:** Mineralization