Across
- 1. study of stars and planets
- 4. part of plant that absorbs water
- 6. largest organ in the human body
- 8. largest animal on the Earth
- 9. person who invented the light bulb
Down
- 2. red planet
- 3. satellite that orbits the Earth
- 5. animal that eat dead
- 7. force that pulls object towards the Earth
- 10. important for humans to stay alive