Subject

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Across
  1. 2. The study of earth's landscapes, places and environments
  2. 4. A language spoke in China
  3. 6. The study of past events
  4. 7. Many calculation which drives us crazy
Down
  1. 1. Study of community, social and government
  2. 3. Do experiments to explain phenomena by observing and testing
  3. 5. The most spoken language worldwide