Across
- 3. Humans who discovered the use of fire
- 4. Modern humans
- 5. Humans who made simple stone tools
- 7. The first material used by early humans to make tools
Down
- 1. An early ape-like ancestor
- 2. Early humans who walked upright
- 5. Early humans depended mainly on this activity for food
- 6. Early humans lived in these natural shelters