Review.  1 Professor Hofstadter has written a superb book ... The Age of Reform entitles Hofstadter to rank with C. Vann Woodward as a master of creative synthesis, as an interpreter of the past who can add to cold data an emphatic insight that transforms history from a book of the dead into a chronicle of life.-- American Political Science Review.
Ventilation systems. All multicellular organisms have mechanisms for drawing oxygen-rich air (or water) into their bodies and removing carbon dioxide-rich air (or water).A closer look at insect breathing systems makes it easier to appreciate the functions of the more familiar human ventilation system.entilation systems. All multicellular organisms have mechanisms for drawing oxygen-rich air (or water) into their bodies and removing carbon dioxide-rich air (or water).
A key characteristic of multicellular organisms is specialization. By contrast, a multicellular organism is made up of many cells that are dependent on each other to perform these essential functions as a group. The cells have divided up the labor and each cell has become specialized to perform a specific task. This specialization is a key characteristic of multicellular organisms.