Leaves fall in autumn as part of a natural process called abscission.

1. Reduced Sunlight

2. Temperature Changes

3. Energy Conservation

4. Nutrient Recycling

5. Drought Avoidance

6. Leaf Senescence

7. Structural Weakness

8. Adaptation to Seasonal Changes

9. Leaf Color Change

The timing of leaf fall varies among tree species and regions, depending on factors such as temperature, day length, and local environmental conditions.