School subjects

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Across
  1. 2. (We are study of Animals)
  2. 4. (sience, technology, engineering, maths)
  3. 6. (Subject of Earth
  4. 8. (exercise)
Down
  1. 1. (any languages)
  2. 3. (Past)
  3. 5. (Subject of numbers)
  4. 7. (drawing)