💡 How to use this page: This chapter blends chemistry with real-world issues. Know the specific gases and their sources — examiners love asking for exact chemical names.

• 🌍 Why This Matters

• 💧 1 — Water (10.1)

• 🌿 2 — Fertilisers (10.2)

• 🌫️ 3 — Air Quality and Climate (10.3)

• 🔬 Try it — Environmental Chemistry Sims

• ✏️ Worked Examples

• ❌ Common Mistakes

• ❓ Question Set

• 🎥 Past Paper Walkthroughs (coming soon)