Across
- 4. .............. system helps us breathe in and out
- 5. ............. is the smallest ocean in the world
- 7. ............ is called as the dwarf planet
- 8. The fourth state of matter
Down
- 1. a geometrical figure which has all its four sides equal
- 2. ............. is the only continent and a country
- 3. Animals that survive by eating other animals
- 6. the dark continent