which is are not ture: earth became compositionally zoned when the melting temp of silicate rock was exceeded, or the earth became compositionally zoned when the sun first formed, or the densest compotitional zones are in the earth interor, or earth's atmkosphere and oceans formed following a boilide impact 66 mill year ago, or earth became compositionally zoned after the melting temp of iron was reached )3 correct choces)