Answer :
Answer:
Explanation:
The assertion and reason provided seem to contain inaccuracies in understanding soil science and the nature of organic matter.
### Assertion:
- "Organic matter is added to the soil to change its basic nature."
### Reason:
- "Because organic matter is basic in nature."
### Evaluation:
1. **Assertion Evaluation:**
- Organic matter is indeed added to soil for various reasons, including improving soil structure, increasing fertility, and enhancing microbial activity. However, the statement that it is added to change the soil's "basic nature" is somewhat ambiguous.
- Adding organic matter can improve soil quality, making it more conducive to plant growth, but it doesn't fundamentally change the soil's inherent nature. Soil has various properties such as texture, pH, nutrient content, and structure, which are influenced by factors like parent material, climate, organisms, and time. Adding organic matter can modify some of these properties, but it doesn't change the soil's basic nature in a fundamental sense.
2. **Reason Evaluation:**
- Organic matter is not inherently "basic" in nature. Organic matter is composed of complex carbon-based compounds derived from once-living organisms. These compounds can range from acidic to neutral to basic depending on their chemical composition. Additionally, the decomposition of organic matter in soil can release acids, contributing to soil acidity rather than basicity.
- The reason provided does not accurately support the assertion. Even if organic matter were basic (which it isn't necessarily), this wouldn't directly explain why it is added to soil.
### Conclusion:
The assertion and reason provided lack accuracy in understanding soil science principles. Organic matter is added to soil to improve its properties and fertility, but it doesn't fundamentally change the soil's basic nature. Additionally, organic matter is not inherently basic; its effect on soil pH and other properties depends on its composition and interactions with soil components.