Across
- 2. a robot used to explore Mars
- 3. progress
- 5. mention a subject
- 6. that can be used instead of sth else
- 7. an arrangement of colours or shapes that is repeated.
- 9. a mountain from which lava and gases come out
Down
- 1. make sth work
- 2. find the size, quantity of sth using standard image a picture.
- 4. the outside or top layer of sth
- 8. not smooth