Chalk It is formed in the sea by sub-microscopic plankton, which fall to the sea floor and are then consolidated and compressed during diagenesis into chalk rock. Most people first encounter the word "chalk" in school where it refers to blackboard chalk, which was originally made of mineral chalk, since it readily crumbles and leaves particles that stick loosely to rough surfaces, allowing it to make writing that can be readily erased. Blackboard chalk manufacture now may utilize mineral chalk, other mineral sources of calcium carbonate, or the mineral gypsum (calcium sulfate). While gypsum-based blackboard chalk is the lowest cost to
What Are Little Boys Made Of? appear in several popular songs, including "Nothing Can Change This Love" by Sam Cooke from 1962 and "Sugar and Spice" by The Searchers, from 1963. "Sugar and spice, and all things nice" is also a verse in the Stone Roses early single "Sally Cinnamon". Van Halen in 1991 released the song "Poundcake," which contains part of the lyrics in the beginning of the music video. Alternative rock band Garbage incorporate the words of the rhyme in their song, "What Girls Are Made of," on the Deluxe edition of their 2012 studio album "Not your Kind of People". In October, 1966,