📅 NSB Round Robin 2013🎓 MS🔄 Round 5#️⃣ Question 22❓ TOSS-UP✍️ Short Answer
Black carbon particles are common in Earth's atmosphere. These particles are the result of incomplete combustion, a chemical reaction involving organic matter and what else?
✔️Answer:OXYGEN
🚀
Take Your Prep to the Next Level
Practice with interactive modes, adaptive testing, and detailed stats on our main app.