Nouns form Unit 13

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Across
  1. 1. A benefit or something useful. (9 letters)
  2. 5. The price or fee of something. (4 letters)
  3. 6. A system involving the interaction of organisms and their environment. (9 letters)
  4. 8. A place where rubbish is thrown. (4 letters)
  5. 9. A material like iron or copper. (5 letters)
Down
  1. 2. A structure like a door that can be opened and closed. (4 letters)
  2. 3. The leader of a country. (9 letters)
  3. 4. Food that is ordered and taken home to eat. (8 letters)
  4. 7. A series of connected metal links. (5 letters)