Across
- 3. The study of life in outer space
- 5. The medium in which living cells and tissues work
- 7. How you understand what is around you
- 9. Pooping urinating and sweating
Down
- 1. Stuff you get from food
- 2. Orbits around other stars
- 3. Made up of several gases such as carbon dioxide and oxygen
- 4. To make energy
- 6. To have babies
- 8. To get bigger and older