Match the following agricultural practices with their primary contribution to sustainability:
| Practice | Contribution |
|---|
| 1. Drip Irrigation | P. Reduces pesticide use by managing pests naturally |
| 2. Integrated Pest Management (IPM) | Q. Minimizes water waste by delivering water directly to roots |
| 3. Crop Diversification | R. Improves soil structure and water infiltration |
| 4. Biochar Application | S. Enhances ecosystem resilience and reduces risk of crop failure |
Which of the following is the correct match?