Answer:
sneaky meany like sly or tricky like a nija
No it is not a personification. A personification is when you give human attributes to an object. For example, “The trees see everything.” The trees do not have eyes so they cannot really see but they are always there and always watching.
Have* this is because has* is past tense and have is more appropriate since there are multiple things you are referring too (Mercury, Venus, Earth and Mars). To be honest, these planets have a molten core.