1) How many planets and in the inner area? a) 3 b) 2 c) 5 d) 4 2) Which inner planet is the largest? a) Earth b) mars c) venus d) mercury 3) which inner planet is the smallest? a) Earth b) Mars c) venus d) mercury 4) Which is the hotest planet? a) Earth b) mercury c) mars d) venus 5) which planet is known as the Red planet? a) Mars b) venus c) Earth d) Mercury 6) which planet doesn’t have a moon ? a) earth b) mars c) venus d) Mercury 7) which planet has one moon? a) mercury b) mars c) earth  d) venus 8) which planet has rust? a) mercury b) earth c) mars d) venus 9) which atmosphere allows the existence of living things a) Earth b) mars c) venus d) mercury 10) which has the thinnest atmosphere? a) mercury b) mars c) earth d) venus

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