Hhh

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Across
  1. 3. – hidden storage
  2. 6. – confident
  3. 7. – transmit, announce
  4. 8. – near the sea
Down
  1. 1. – list of sources
  2. 2. – study of matter
  3. 3. – organized effort
  4. 4. – being a member of a country
  5. 5. – working together
  6. 6. – test, evaluation