Human reproductive ecology to aid infant survival and growth. Lactational strategies vary cross-culturally, but can typically be defined by sibling sets and sex ratios, frequency of nursing, entire lactational duration, and milk composition. Milk is composed of my bioconstituents, but only a few will be outlined here. In the first days of puerperium, the first milk is thick and yellowish, also called colostrum. For weeks after that, mature milk is expressed and it has been shown that fetal-mammary gland signaling occurs even before birth in determining milk type and concentrations based on the fetus sex. Colostrum plays an important role in establishing the
Form 990 Form 990 Form 990 (officially, the "Return of Organization Exempt From Income Tax") is a United States Internal Revenue Service form that provides the public with financial information about a nonprofit organization. It is often the only source of such information. It is also used by government agencies to prevent organizations from abusing their tax-exempt status. Certain nonprofits have more comprehensive reporting requirements, such as hospitals and other health care organizations (Schedule H). There is a variant of Form 990 called Form 990-EZ ("Short Form Return of Organization Exempt From Income Tax"). This form can be used instead of Form