Complete the crossword puzzle below!

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Across
  1. 1. An artificial transparent tank in which water plants and animals are kept
  2. 3. Next to or adjoining something else.
  3. 7. A person who works for an employer for a fixed period of time in order to learn the particular skills needed in his/her job
  4. 8. A person who publicly supports or recommends a particular cause or policy
  5. 9. A criminal act of deliberately setting fire to property.
  6. 10. A punctuation mark used to indicate either possession or the omission of letters in a word.
  7. 11. The use of the same letter or sound at the beginning of words that are close together.
  8. 12. The recognition and understanding of something or someone.
  9. 14. Causing irritation or anger.
  10. 15. A single-celled aquatic living organism which is able to change its shape.
Down
  1. 1. A small bag or sac that is attached to the end of the large intestine; A section giving extra information in a book.
  2. 2. The chemical/metal element with the atomic number 13.
  3. 4. The planning and running of a business, organisation or institution.
  4. 5. Arrested someone for a crime.
  5. 6. To have expressed or explained one's thoughts or feelings clearly.
  6. 7. A strong feeling of opposition or hostility.
  7. 8. Foolish, outrageous, or amusing behaviour.
  8. 13. A word or phrase that is formed by re-arranging the letters of another word or phrase