Paheli gave the following ill effects of the practice of burning dried leaves and other plant parts
(i) Burning degrades the soil.
(ii) Burning produces harmful gases/fumes.
(iii ) Precious raw materials to obtain manure at low cost is lost.
(iv) Lot of heat is generated unnecessarily.
The correct reasons of why we should not burn leaves are

Options

A. i, ii and iv only
B. i, ii, iii, and iv
C. ii and iii only
D. ii, iii, and iv only

Answer

To address the question regarding the ill effects of burning dried leaves and other plant parts, we can analyze each of the points mentioned by Paheli and determine the correct reasons for not burning leaves.

### Step-by-Step Solution:

1. **Understanding Soil Degradation**:
- Burning dried leaves can degrade the soil. When leaves are burned, the nutrients that would otherwise enrich the soil are lost. This degradation can lead to poorer soil quality over time.

**Hint**: Think about how nutrients in leaves contribute to soil health.

2. **Release of Harmful Gases**:
- The burning of dried leaves produces harmful gases and fumes, which can be detrimental to human health and the environment. These gases can contribute to air pollution and respiratory issues.

**Hint**: Consider the impact of smoke and gases on air quality.

3. **Loss of Raw Materials for Manure**:
- Dried leaves are a valuable resource for making organic manure. When we burn them, we lose this raw material that could have been used to create nutrient-rich compost, which is beneficial for plants and soil.

**Hint**: Reflect on how composting can recycle nutrients back into the soil.

4. **Unnecessary Heat Generation**:
- Burning generates a lot of heat, which is unnecessary and can contribute to local temperature increases. However, this point is less critical compared to the others regarding health and environmental impact.

**Hint**: Think about how heat affects the local environment and whether it is a significant concern compared to other factors.

### Conclusion:
Based on the analysis:
- The correct reasons for not burning leaves are (i) it degrades the soil, (ii) it produces harmful gases, and (iii) it results in the loss of precious raw materials for manure. The point about heat generation is less significant in comparison.

### Final Answer:
The correct reasons for not burning leaves are:
- (i) Burning degrades the soil.
- (ii) Burning produces harmful gases/fumes.
- (iii) Precious raw materials to obtain manure at low cost are lost.