1. Which blood cells carry oxygen? (Q28) 2. Which blood cells carry oxygen? (Q78) 3. Which planet is known as the Red Planet? (Q67) 4. Which planet is known as the Red Planet? (Q27) 5. Which metal is liquid at room temperature? (Q44) 6. Which gas do plants absorb in photosynthesis? (Q35) 7. What is the SI unit of electric current? (Q56) 8. Which gas do plants absorb in photosynthesis? (Q85) 9. Which metal is liquid at room temperature? (Q14) 10. Which gas is most abundant in Earth's atmosphere?