Science

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Across
  1. 1. to guess an amount by using information
  2. 5. the final part of one's essay
  3. 6. the detailed study of smth
  4. 7. a prize
  5. 9. to discover an amount by using mathematics
  6. 11. the starting part of one's essay
  7. 12. not natural, made by people
Down
  1. 2. relating to the present time
  2. 3. a part of a vehicle that makes it move
  3. 4. smth good that happens or that you receive because of smth you've done
  4. 7. a synonym for "try"
  5. 8. using or relating to electricity
  6. 10. the opposite of "top"