Across
- 2. A big old building
- 3. Type of protozoan that has no shell
- 5. Where athletes run
- 7. Aquatic, eukaryotic, autotrophic organisms that perform photosynthesis
- 11. People can wear it on their heads
- 14. The study of the Universe
- 17. We made them in groups in Biology at school
- 19. Some substance that gives colour
- 20. Building where trains arrive
- 23. Favourite food of mice
- 24. Similar to quick
- 25. Twelve o'clock at night
Down
- 1. Something that protect you from rain water
- 4. Balls of air inside a liquid
- 6. The smallest structural and functional unit of an organism
- 8. Thin grey powder after something has been burnt
- 9. An animal that lives in water that if you cut one arm it will regenerate
- 10. A device to call people
- 12. They provide immunity against diseases
- 13. A sport played with sticks
- 15. Liquid state of very hot metal
- 16. The opposite to up
- 18. A very cold season
- 21. Favourite food of carnivores
- 22. Where people see when trains arrive and leave