Inventions that will save the world

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Across
  1. 2. with salt and water
  2. 4. manufactures furniture from broken pieces of wood, using an ecological resin to repair them
  3. 5. works as a filter for water and collects trash
  4. 6. nozzle. device that is installed in the tap you have at home
Down
  1. 1. you can cook using only the sun
  2. 3. this is an ecological light source that