Across
- 2. Wandering people
- 5. Group of seven stars.
- 7. It is a unique planet, 4.5 billion years old.
- 8. New metal made by mixing two metals.
- 9. ___________ was the first metal to be discovered.
Down
- 1. Early man used, made of stone.
- 3. The biggest discovery of New stone age
- 4. It was used to scare away wild animals.
- 6. During ________period man lived like a nomad.