Breastfeeding that is needed for a baby's growth and development. Breastfeeding triggers biochemical reactions which allows for the enzymes, hormones, growth factors and immunologic substances to effectively defend against infectious diseases for the infant. The breast milk also has long-chain polyunsaturated fatty acids which help with normal retinal and neural development. The composition of breast milk changes depending on how long the baby nurses at each session, as well as on the child's age. The first type, produced during the first days after childbirth, is called "colostrum". Colostrum is easy to digest although it is more concentrated than mature milk. It
Modular form The situation with modular forms is precisely analogous. Modular forms can also be profitably approached from this geometric direction, as sections of line bundles on the moduli space of elliptic curves. If "f" is holomorphic at the cusp (has no pole at "q" = 0), it is called an entire modular form. If "f" is meromorphic but not holomorphic at the cusp, it is called a non-entire modular form. For example, the j-invariant is a non-entire modular form of weight 0, and has a simple pole at i∞. Other common generalizations allow the weight "k" to not be an integer,