UNIT 3 THE RED PLANET

1234567891011121314
Across
  1. 1. The systematic study of materials and sources to establish facts
  2. 6. A response to a particular event or situation
  3. 9. Set apart from others; alone
  4. 10. To imitate the appearance or character of
  5. 12. To rely or depend upon
  6. 13. Made by humans rather than nature
  7. 14. To set up on a firm or permanent basis
Down
  1. 2. Machines designed to convert energy into motion
  2. 3. The forming of a theory without firm evidence; investing with risk
  3. 4. To remain alive or in existence
  4. 5. A rapid turning motion
  5. 7. Operating by itself without direct human control
  6. 8. The state of feeling weary and restless through lack of interest
  7. 11. A prolonged feeling of sadness; a low economic period)