The answer sould be Component of Thyroxine, Thyroxine contains iodine and are formed from thyronines, which are composed of two molecules of the amino acid tyrosine. Thyroxine contains four iodine atoms, and triiodothyronine contains three iodine atoms.
If you're looking for "what rocks are formed by changes..." it's Igneous Rocks.
Answer:
They are made in the Heavens, in Stars.
Explanation:
Yes it is incrediably harmfull