Crust (geology) enriched compared to the underlying mantle. Although the continental crust comprises only about 0.6 weight percent of the silicate on Earth, it contains 20% to 70% of the incompatible elements. All the other constituents except water occur only in very small quantities and total less than 1%. Estimates of average density for the upper crust range between 2.69 and 2.74 g/cm and for lower crust between 3.0 and 3.25 g/cm. Earth formed approximately 4.6 billion years ago from a disk of dust and gas orbiting the newly formed Sun. It formed via accretion, where planetesimals and other smaller rocky bodies
What Would We Do Without You? What Would We Do Without You? "What Would We Do Without You?" is the 69th episode of the ABC television series "Desperate Housewives". It was also the twenty-second episode of the show's third season. It was written by Bob Daily and directed by Larry Shaw. The episode aired on May 13, 2007. Ricardo Antonio Chavira submitted this episode for consideration on his behalf in the category of "Outstanding Supporting Actor in a Comedy Series" at the 2007 Emmy Awards. Mike and Susan go out to dinner, the night exactly a year after he and Susan were meant to get engaged