Across
- 2. There are ______ centimeters on a ruler.
- 4. The majority of what your brain is made of is _____.
- 5. _____ is what we breath
- 8. _____ _____ is the newest country.
- 10. _____ are in the alphabet.
- 12. _____ covers 71 percent of Earth.
- 13. _____ is the biggest mammal.
Down
- 1. _______ _______ is the fastest bird in the world.
- 3. _______ ____ is the smallest country.
- 6. _____ is the most popular sport in the world.
- 7. ______ is the biggest country
- 9. ______ is man's best friend
- 11. Stop signs used to be _____.