C -> AC7 -> A7C/B -> A/G#G -> EF -> DFm -> DmAm -> F#mD -> BD7 -> B7E -> C# 
Bb -> G
OK let's get to it! 
CG This is my earth, and I live in it,
FFm It's one third dirt and two thirds water,
C And it rotates and revolves through space,
C7 At rather an impressive pace,
FFmCC/B And never even messes up my hair,
Am But here's the really weird thing,
DD7 The force created by its spin,
FCG Is the force that stops the chaos flooding in.
AmF This is my earth and it's fine
GEAm It's where I spend the vast majority of my time
FCG It's not perfect, but it's mine. It's not perfect.
CE This is my house, and I live in it.
(same verse has Bb after the last G chord) Last lines: 
AmF This is my brain and it's fine
GEAm It's where I spend the vast majority of my time
FCG It's not perfect, but it's mine. It's not perfect.
FAmG I'm not sure I've worked out how to work it.
FBbC It's not perfect, but it's mine.