In differentiation, iron-rich materials float to the surface of a planet In differentiation, iron-rich materials float to the surface of a planet and the silicon-rich materials sink to the center. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ You may also like... In terrorist groups, those categorized as _____ tend to be socially alienated, narcissistic, arrogant, and intelligent, with a deeply idealistic The Jewish religious/political party which was composed of rabbis in charge of the synagogue _______________ is what the film is about; ______________ is how it’s expressed.