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).
Therefore, a system of transport allows for all cells in the body to get the necessary substances for life in a timely manner. In multicellular animals, you will a heart(pumping mechanism), a liquid tissue known as blood, arteries, veins and tiny capillaries.osted on. (Answer #1). Multi-cellular organisms are too big and not all of their cells have contact with the external environment. All organisms need to exchange substances with their environment-take in needed molecules and get rid of waste.