Time Travel

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Across
  1. 3. relating to technology (T)
  2. 5. relating to industry (I)
  3. 7. the practice of farming; the first revolution of humankind (A)
  4. 8. the process of interaction and integration among people, companies, and governments worldwide (G)
  5. 10. a member of a group of people that lives by hunting and looking for plants that can be eaten, rather than by keeping animals for food or by growing crops (H-G)
  6. 11. a letter, number, or sign that represents an idea (S)
Down
  1. 1. a small piece of something that has broken off (F)
  2. 2. damage caused to water, air, etc. by harmful substances or waste (P)
  3. 4. a type of white stone that contains calcium (L)
  4. 6. a type of animals that gives birth to live babies, not eggs, and feeds its young on milk (M)
  5. 9. made of the solid substances that settle at the bottom of the sea, rivers, lakes (S)