Across
- 1. - Ancient writing system from Mesopotamia with wedge-shaped characters
- 2. - Widespread outbreak of disease affecting large populations (think historical events)
- 5. - Mathematician whose theorem relates sides of right triangles
- 7. - Without a name
- 8. - Plants turn sunlight into this.
- 9. - Period of rebirth in art and culture.
Down
- 1. - Economic system focused on private ownership.
- 3. - What surrounds our planet without walls.
- 4. - a group of billions of stars
- 6. - Famous portrait by Leonardo da Vinci