Name two natural and man-made causes of deforestation.

Explanation

**Step-by-Step Solution:**

1. **Understanding Deforestation**: Deforestation refers to the process of clearing or cutting down forests, which can lead to a loss of biodiversity and disruption of ecosystems.

2. **Identifying Natural Causes**:
- **Natural Calamities**: One major natural cause of deforestation is natural calamities such as floods. Floods can lead to excessive water accumulation, which can spoil the soil and result in the death of trees.
- **Forest Fires**: Another natural cause is forest fires, which can occur due to storms or high winds. These fires can rapidly spread and consume large areas of forest, converting them into barren land.

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