Earthen pitchers are more effective in Hyderabad than in Chennai. Justify.

Explanation

**Step-by-Step Solution:**

1. **Understanding Earthen Pitchers**: Earthen pitchers are traditional pots made from clay, commonly used to store water. They are known for their ability to cool water through the process of evaporation.

2. **Cooling Mechanism**: The cooling effect of earthen pitchers is primarily due to evaporation. When water evaporates from the surface of the pitcher, it absorbs heat from the water inside, leading to a decrease in temperature.

3. **Role of Humidity**: The rate of evaporation is influenced by humidity levels in the environment. Lower humidity allows for a higher rate of evaporation, while higher humidity reduces it.

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