What is loam soil ?

Explanation

**Step-by-Step Solution:**

1. **Definition of Soil**: Soil is a natural resource composed of minerals, organic matter, air, and water. It serves as a medium for plant growth and is essential for agriculture.

2. **Composition of Loam Soil**: Loam soil is a specific type of soil that is characterized by its balanced mixture of sand, silt, and clay. Typically, loam soil contains approximately 34% air and 66% water, along with organic matter known as humus.

3. **Importance of Humus**: Humus is the decomposed organic material in soil that enriches it with nutrients. It improves soil fertility, enhances moisture retention, and supports healthy plant growth.

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