Across
- 4. The building blocks of life
- 6. Astronauts travel here
- 8. Coal and diamonds are made of this
- 9. What scientists do to learn new things
- 10. What keeps us down to Earth
Down
- 1. Energy that comes through wires to power your home
- 2. The human body is 60% this!
- 3. Tiny creatures that make you sick
- 5. The third planet in our solar system
- 7. A green thing with roots, stems, and leaves