Soil enrichment of dissolved ions and inorganic salts occurs due to

Options

A. weathering
B. pedogenesis
C. humification
D. all the above

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks how the soil becomes enriched with dissolved ions and inorganic salts. We need to identify the processes that contribute to this enrichment.

2. **Analyzing the Options**:
- **Option A: Weathering**: Weathering is the process where rocks and minerals break down into smaller particles. During this process, minerals dissolve and release ions into the soil, increasing the concentration of dissolved ions and inorganic salts.
- **Option B: Pedogenesis**: This refers to the formation of soil. During soil formation, various processes contribute to the accumulation of minerals and nutrients, which also increases the amount of inorganic salts in the soil.
- **Option C: Humification**: Humification is the process of forming humus, a dark, organic material in soil. Humus acts as a reservoir for minerals and nutrients, thus contributing to the enrichment of dissolved ions and inorganic salts in the soil.

3. **Conclusion**: Since all three processes (weathering, pedogenesis, and humification) contribute to the enrichment of the soil with dissolved ions and inorganic salts, the correct answer is **Option D: All of the above**.

**Final Answer**: Soil enrichment of dissolved ions and inorganic salts occurs due to **all of the above** (weathering, pedogenesis, and humification).

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