Select the incorrect match .

Options

A. EI Nino effect - odd climatic changes
B. Radioactive leakage - Three Mile island
C. Biomagnification - Hg and DDT
D. Haryana Kisan Welfara Club - Ahmed Khan

Answer

To solve the question of selecting the incorrect match, we will analyze each option provided in the question step by step.

### Step-by-Step Solution:

1. **El Nino Effect and Climatic Changes**:
- The El Nino phenomenon refers to the periodic warming of sea surface temperatures in the central and eastern Pacific Ocean.
- This warming can lead to significant climatic changes globally, including altered weather patterns, increased rainfall in some areas, and droughts in others.
- **Conclusion**: This match is **correct**.

2. **Radioactive Leakage and Three Mile Island**:
- The Three Mile Island accident occurred in Pennsylvania, USA, in 1979, where there was a partial meltdown of a reactor, leading to a release of radioactive gases.
- This incident raised concerns about nuclear safety and health impacts, but it did not lead to widespread radioactive contamination like the Chernobyl disaster.
- **Conclusion**: This match is **correct**.

3. **Biomagnification, Mercury, and DDT**:
- Biomagnification refers to the increasing concentration of toxic substances (like mercury and DDT) as they move up the food chain.
- Both mercury (a heavy metal) and DDT (a pesticide) are well-known for their ability to biomagnify, causing higher concentrations in predators than in their prey.
- **Conclusion**: This match is **correct**.

4. **Haryana Kisan Welfare Club and Ahmed Khan**:
- The Haryana Kisan Welfare Club is an organization focused on the welfare of farmers in Haryana.
- It was actually established by Ramesh Chandra Dagar, not Ahmed Khan.
- **Conclusion**: This match is **incorrect**.

### Final Answer:
The incorrect match is **Haryana Kisan Welfare Club, Ahmed Khan**.

---