#1/#2 are one sentence: "You can tell by the way she walks that she's my girl."
"You can tell by the way she talks that she rules the world."
"Then she'd say, "It's ok, I got lost on the way, but I'm a Supergirl and Supergirls don't cry'."
"She's sowing seed, she's burning trees" I suspect is merely a neat sound to go into the song's structure and hasn't any particular meaning.
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