How many planets and in the inner area?, 3, 2, 5, 4, Which inner planet is the largest?, Earth , mars, venus , mercury, which inner planet is the smallest?, Earth, Mars, venus , mercury , Which is the hotest planet?, Earth , mercury , mars, venus, which planet is known as the Red planet?, Mars , venus, Earth , Mercury, which planet doesn’t have a moon ?, earth, mars , venus, Mercury, which planet has one moon?, mercury, mars, earth , venus, which planet has rust?, mercury, earth , mars, venus, which atmosphere allows the existence of living things , Earth , mars , venus, mercury , which has the thinnest atmosphere?, mercury, mars, earth , venus.

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