One of the biggest changes happening to metamorphs is the way that they breathe: Metamorphs are developing lungs so they need to breathe air, just like adult frogs.
(the biggest changes; happening; to metamorphs) (they; breathe; ) (they; need; to breathe air) Context(they need,List([116, 125))):(they; need to breathe; air)
they need,List([116, 125))
the biggest changes they they they
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