7th. Danger! This Mission to Mars Could Bore You to Death!

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Across
  1. 3. —a serious attempt to do something hard. SYNONYMS: effort, attempt, mission. ñ: esfuerzo / empresa
  2. 4. —something that causes a reaction in a living thing. SYNONYMS: trigger, signal, prompt. ñ: estímulo
  3. 6. —reminding you of something from the past. SYNONYMS: similar to, suggestive of, like. ñ: reminiscente / que recuerda a
  4. 8. —painfully; to an extreme and unbearable degree. SYNONYMS: painfully, terribly, agonizingly. ñ: dolorosamente / de manera insoportable
  5. 12. —in a panicked, desperate, or rushed way. SYNONYMS: desperately, wildly, urgently. ñ: frenéticamente / desesperadamente
  6. 13. —a tiny single-celled creature that changes shape to move. SYNONYMS: microorganism, single-celled organism. ñ: ameba
  7. 16. —has a connection or relationship with something else. SYNONYMS: connects, links, relates. ñ: se correlaciona / está relacionado
  8. 18. —naturally part of something; always there. SYNONYMS: built-in, natural, inborn. ñ: inherente / propio
  9. 19. —lasting a long time or happening again and again. SYNONYMS: ongoing, constant, persistent. ñ: crónico
  10. 20. —related to thinking and mental processes. SYNONYMS: mental, intellectual, thinking. ñ: cognitivo
Down
  1. 1. —done without being fully aware of it. SYNONYMS: unknowingly, automatically, instinctively. ñ: subconscientemente / sin darse cuenta
  2. 2. —being kept in a small or limited space. SYNONYMS: imprisonment, isolation, restriction. ñ: confinamiento / encierro
  3. 5. —extremely tiring and hard to endure. SYNONYMS: exhausting, brutal, punishing. ñ: agotador / extenuante
  4. 7. —something notable that happens or is observed. SYNONYMS: event, occurrence, marvel. ñ: fenómeno
  5. 9. —relating to a dome-shaped structure built from triangles. SYNONYMS: curved, dome-shaped. ñ: geodésico
  6. 10. —to push or drive something forward with force. SYNONYMS: launch, thrust, drive. ñ: propulsar / empujar
  7. 11. —a scary or threatening possibility; also means ghost. SYNONYMS: ghost, threat, shadow. ñ: espectro / fantasma
  8. 14. —in a wild, uncontrolled, or frantic way. SYNONYMS: frantically, wildly, obsessively. ñ: frenéticamente / maníacamente
  9. 15. —confused and unable to think clearly. SYNONYMS: confused, puzzled, disoriented. ñ: confundido / aturdido
  10. 17. —dull sameness; no change or variety. SYNONYMS: boredom, repetition, routine. ñ: monotonía