Earth Day

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Across
  1. 1. the color of most grass and trees
  2. 3. not clean
  3. 5. a clear liquid, without color or taste, that forms the seas, lakes, rivers, and rain
  4. 6. tall woody plants
  5. 7. the third planet from the sun
  6. 9. a large area covered with trees
Down
  1. 1. household waste or rubbish
  2. 2. keep safe from harm or danger
  3. 4. use something again more than once
  4. 8. mixture of invisible gases that surrounds the earth