3.1

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Across
  1. 5. Small, hard blocks made of baked clay used for building walls.
  2. 8. The flat surface inside a building that you walk on.
  3. 9. house: A house that stands alone and is not connected to other houses.
  4. 12. The top covering of a building that protects it from rain and sun.
  5. 13. A small platform outside a room on an upper floor, with a wall or railing around it.
  6. 15. home: A house designed and built to be good for the environment.
  7. 16. house: A house built on tall posts or stilts above the ground or water.
Down
  1. 1. A round tent with wooden frames and animal skin or thick cloth, used as a home by some people.
  2. 2. A tall pipe on a roof that smoke goes up from, especially from a fireplace.
  3. 3. The soft, thick hair of sheep, used for making clothes.
  4. 4. Using energy and resources in a way that doesn't waste them.
  5. 6. panels: Flat, dark things put on a roof to use sunlight to make electricity.
  6. 7. The hard material that comes from trees, used for building and making things.
  7. 10. impact on the environment: Not harming nature very much.
  8. 11. A house that has only one floor.
  9. 14. canvas: A strong, white cloth used for painting on.