Elementary class

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Across
  1. 2. A person who delivers letters (7 letters)
  2. 3. The planet we live on (5 letters)
  3. 5. Opposite of "empty" (4 letters)
  4. 6. The largest ocean on Earth (7 letters)
  5. 7. A sweet food made by bees (5 letters)
  6. 11. A large mammal with a trunk (8 letters)
  7. 12. A tool used to cut paper (7 letters)
Down
  1. 1. A round fruit that is usually red or green (5 letters)
  2. 4. A device for talking to someone far away (9 letters)
  3. 8. A part of the body used for seeing (3 letters)
  4. 9. A flying insect with colorful wings (9 letters)
  5. 10. The capital city of France (5 letters)