Only humans are supposed to act on behalf of others.

In addition, in two comparative experiments, they found that both chimpanzees and human being infants helped regardless of any expectation of prize altruistically, even when some effort was required, and even though the recipient was an unfamiliar individual all features previously thought to be unique to humans. The evolutionary roots of individual altruism may thus go deeper than previously believed, reaching as far back as the last common ancestor of chimpanzees and human beings. In a related content, Frans de Waal discusses the presssing issues brought out by this discovery..The data derive from completely of birth information collected in every 50 states nearly, the District of U and Columbia.S. Territories.S. Births. Related StoriesDeaths from avoidable risk elements: an interview with Dr Ali Mokdad, IHMESexual activity causes physiological adjustments in the torso that increase women's likelihood of obtaining pregnantTraces of Ebola may linger in semen for 9 monthsThe general fertility price fell from 68.6 births per 1,000 females aged 15-44 each year in 2008 to 66.7 in ’09 2009.S.