General culture

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Across
  1. 10. what is the most expensive metal in the world
  2. 11. What is the charge of an electron
  3. 14. What is the chemical symbol for silver
  4. 15. What is the name of a line that joins two points of a circle
  5. 16. how many times has man been on the moon
  6. 17. What pigment do plants produce to carry out photosynthesis?
  7. 20. What was the name of the Muslim emir who gave the keys of Granada to the Catholic Monarchs?
  8. 23. Which Roman emperor legalized Christianity?
  9. 24. What is the result of a multiplication called?
  10. 25. on which continent did humanity emerge?
  11. 28. the contraction of the muscle causes hiccups
  12. 29. What is called atomic number
  13. 30. Which faction led Mao Zedong during the Chinese civil war?
  14. 34. What is the softest mineral
  15. 35. what color pigment is our skin
  16. 36. What is the name of the disorder in which growth is disproportionate and excessive?
  17. 38. how many are the senses
  18. 39. What was Che Guevara's first name?
  19. 40. What living things are made of
  20. 42. by what other name is vitamin B3 known?
  21. 43. What element in the periodic table has the symbol fe
  22. 44. What is the third planet in the solar system
  23. 45. What was the first cloned animal
  24. 46. What is the lower layer of the atmosphere
  25. 47. Which is the planet in the solar system that has the longest day?
  26. 48. What color is blood plasma
Down
  1. 1. What is the mammal that cannot jump
  2. 2. What is the name of the scandal that forced US President Richard Nixon to resign?
  3. 3. which satellite influences the seas
  4. 4. Where is the Sagrada Familia located?
  5. 5. how many bones does the skull have
  6. 6. in which country the Aztec civilization arose
  7. 7. Which US president was assassinated in Dallas
  8. 8. What is the hardest metal
  9. 9. What is the name of a triangle that has three sides?
  10. 12. What was the largest genocide in history
  11. 13. who created the communist party
  12. 18. which British queen was the daughter of the Catholic kings
  13. 19. where Adolf Hitler was born
  14. 21. What is the closest galaxy to ours?
  15. 22. Edison who invented the light bulb
  16. 26. where Joan of Arc was born
  17. 27. What was the first metal that man created
  18. 31. What computer milestone of 1969 would radically change the course of human history?
  19. 32. in which country was the first atomic bomb used
  20. 33. What biology studies
  21. 35. What is the liquid metal used in some thermometers
  22. 37. that forms the union of two elements
  23. 41. What is the study of fungi called?