Across
- 2. What is the fastest animal in the world
- 7. Which organ of the body consumes the most energy
- 9. Which planet is closest to the Sun
- 11. How many sides does a heptadecagon have
- 13. What is the smallest bone in the human body
- 14. What is the most expensive metal in the world
- 16. What gas in the atmosphere protects us from ultraviolet radiation?
- 17. What is the only mammal capable of flying
- 18. What is the largest organ in the human body
- 19. What was the first metal that man used
- 21. Which is bigger, an atom or a cell
Down
- 1. In which month of the year is the Sun closest to the Earth?
- 3. What are the names of baby rabbits?
- 4. What is the hardest mineral on the planet
- 5. What is the name of Saturn’s largest satellite
- 6. How many hearts does the octopus have
- 8. Which animal causes the most deaths each year
- 10. Which element of the periodic table has He as its symbol
- 12. What is the name of the triangle that has three equal sides
- 15. What is the strongest muscle in the human body
- 20. What is the name of the process by which plants feed