Across
- 5. The process of breathing in and out
- 7. The smallest unit of life
- 9. The study of weather
- 11. The author of "Matilda"
- 12. Opposite of "noisy"
- 14. The chemical symbol for gold
- 16. A shape with four equal sides
- 18. The planet known as the "Red Planet"
- 23. The main character in a story
- 24. Opposite of "always"
- 25. A polygon with five sides
- 26. Device for playing video games
- 28. The color of grass
- 29. The organ that pumps blood
- 30. The largest continent
- 31. A synonym for "brave"
Down
- 1. The first element on the periodic table
- 2. A reptile that changes color
- 3. A sport played with a bat and ball
- 4. The study of past events
- 6. A tool used to measure temperature
- 8. The process of making food using sunlight
- 10. A vehicle that flies
- 13. The largest mammal
- 15. The largest planet in our solar system
- 17. The capital of France
- 19. A person who writes books
- 20. The freezing point of water in Celsius
- 21. Number of fingers on both hands
- 22. The main ingredient in bread
- 25. A bird known for its colorful tail
- 27. Number of continents on Earth