Engish 10 - Vocabulary Review Unit 2.1

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Across
  1. 2. use less
  2. 4. use again
  3. 5. dirty air water
  4. 6. long-term weather
Down
  1. 1. unwanted materials
  2. 2. thrown-away things
  3. 3. natural world
  4. 4. use many times