Discuss the effects of deforestation on the following.
Cities (Urban areas)

Explanation

### Step-by-Step Solution:

1. **Definition of Deforestation**:
- Deforestation refers to the removal of trees and other vegetation from a forested area. This can occur due to various reasons such as urbanization, agriculture, and logging.

2. **Impact on Natural Calamities**:
- Deforestation increases the risk of natural calamities. Without trees, the land becomes more susceptible to floods because there are fewer roots to absorb rainwater. Additionally, the lack of vegetation can lead to droughts, as trees play a crucial role in maintaining the water cycle.

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