Give reasons:
Why are lichens not common in Bangalore whereas they commonly grow in Ooty or Bandipur?

Explanation

### Step-by-Step Solution:

1. **Understanding Lichens**: Lichens are symbiotic organisms composed of fungi and algae or cyanobacteria. They are sensitive to environmental conditions and can indicate air quality.

2. **Climate Differences**: Bangalore has a different climate compared to Ooty and Bandipur. Bangalore has a more urbanized environment with higher pollution levels, while Ooty and Bandipur are more rural and have a cooler, less polluted atmosphere.

3. **Air Quality**: Lichens are sensitive to air pollution, particularly sulfur dioxide and nitrogen oxides. The higher levels of pollution in Bangalore can inhibit the growth of lichens, whereas the cleaner air in Ooty and Bandipur supports their growth.

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