The Day the Earth Spilt Apart

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Across
  1. 5. size and ramification of an event
  2. 6. signs of things to come
Down
  1. 1. uneasy, tense, restless
  2. 2. a group of people banded together for a cause
  3. 3. someone who gives a speech
  4. 4. a scientist that study rocks and rock formations