📅 NSB Middle School 2021🎓 MS🔄 Round 4#️⃣ Question 5🌟 BONUS✍️ Short Answer
Argonne National Lab researchers are studying how to biosynthesize gold nanoparticles within hypoxic tissues. The main organ they are studying accounts for 25% of the body's oxygen demand but only 2% of the body's mass. What organ is this?
✔️Answer:BRAIN
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