Which micronutrient is responsible for causing die-back disease in plants?

Explanation

**Step-by-Step Solution:**

1. **Understanding Micronutrients**: Micronutrients are essential elements required by plants in small quantities. They play crucial roles in various physiological processes.

2. **Identifying Micronutrients**: Some common examples of micronutrients include:
- Boron (B)
- Copper (Cu)
- Molybdenum (Mo)
...