As incorporated into the theory of quantum mechanics, this quantization of the energy of electrons and the resulting implications are regarded by physicists as part of the fundamental framework for understanding and describing nature.
An adult human has 206 bones. As compared to this a new born baby has about 270 bones. A baby is born with cartilage between some bones. This gives babies more flexible body structure, allows faster growth. As the baby grows, some groups of bones fuse together to form a single bone.
About 1 in 10 babies is born prematurely each year in the United States. The earlier in pregnancy a baby is born, the more likely he is to have health problems. Some premature babies have to spend time in a hospitalâs neonatal intensive care unit (also called NICU). This is the part of a hospital that takes care of sick newborns.