Life in 2060

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Across
  1. 2. any animal in which the female gives birth to babies, not eggs, and feeds them on milk
  2. 4. a statement or proof that something is true
  3. 6. an important discovery or development that helps to solve a problem
  4. 10. someone who is a 100 years old or more
  5. 12. having a spine (=back bone)
  6. 14. a member of the most developed group of mammals (humans, monkeys, apes)
  7. 15. knowledge and understanding of a particular activity
  8. 19. a strong feeling of dislike or disgust
  9. 20. for granted to not realize or show that you are grateful for something or someone
Down
  1. 1. an area of land that is permanently frozen below the surface
  2. 3. a thing or a person that is very surprising or causes a lot of admiration
  3. 5. to grow again
  4. 7. causing disagreement or discussion
  5. 8. back bone
  6. 9. very forceful or energetic, healthy and strong
  7. 11. an amount of something that is available for use
  8. 13. to make something last longer
  9. 16. relating to creatures from another planet
  10. 17. to say an event or action will happen in the future
  11. 18. an arm or leg of a person or animal