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     What is it?
           _______________ 1. The celestial body that revolves around the sun.
           _______________ 2. The only planet that has life.
           _______________ 3. The center and hottest layer of Earth.
           _______________ 4. The layer which composing 84% of Earth’s volume.
           _______________ 5. Group of planet and other bodies like moons that revolves
                                                  around the sun.
           _______________ 6. The thinnest layer and composing rocks and minerals.
       Choices:
                           Solar system                                         Earth                                         Mantle
                                  Core                                          Crust                                         Planet
     	
