In my opininon some of the most important features of development that ensure our survival during the first two years of life include head-sparing and transient exuberance. Head- sparing, which is a biological mechanism that protects the brain when malnutrition affects the body's growth. It is the most important feature of development. Head- sparing protects the brain, making sure that its the last part of the body to be damaged by malnutrition. The chapter states that much of the weight increase in the early months is fat. Baby fat is stored to keep the brain nourished if teething or sickness interferes with eating. If nutrition is temporarily inadequate the body stops growing but the brain does not. If Head sparing didn't occur, the slightest
