Environment

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Across
  1. 3. It´s a place where fresh wáter comes out of the ground.
  2. 4. It´s the energy we use to make machines work.
Down
  1. 1. It´s a flat piece of glass that catches the sun´s energy.
  2. 2. Materials we can burn to make electricity, for example oil.
  3. 3. It´s a window in the roof to let light in.