1. Which blood cells carry oxygen? (Q18) 2. Which blood cells carry oxygen? (Q58) 3. Which gas do plants absorb in photosynthesis? (Q85) 4. Which planet is known as the Red Planet? (Q67) 5. Which gas do plants absorb in photosynthesis? (Q45) 6. Which blood cells carry oxygen in the human body? 7. Which blood cells carry oxygen? (Q68) 8. What is the SI unit of electric current? (Q31) 9. Which metal is liquid at room temperature? (Q84) 10. Which planet is known as the Red Planet? (Q27)