1) gravity a) Sun b) Earth c) moon d) All e) Earth and sun f) Earth and moon 2)  Wind and weather a) Sun b) Earth c) moon d) All e) Earth and sun f) Earth and moon 3) Inactive Volcaneo a) Sun b) Earth c) moon d) All e) Earth and sun f) Earth and moon 4) A little frozen at poles a) Sun b) Earth c) moon d) All e) Earth and sun f) Earth and moon 5) layers a) Sun b) Earth c) moon d) All e) Earth and sun f) Earth and moon 6) Breathable Atmosphere a) Sun b) Earth c) moon d) All e) Earth and sun f) Earth and moon 7) Breathable Atmosphere a) Sun b) Earth c) moon d) none of  the above e) Earth and sun f) Earth and moon

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