Guess the subjects

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Across
  1. 2. Worlds in words, tales unfold
  2. 5. Movement, sports and staying fit
Down
  1. 1. Crunching numbers and solving equations.
  2. 3. Balancing ledgers and tracking the sum
  3. 4. Life's study, cells to ecology
  4. 6. Brushes and colours, a canvas delight