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The first fossilized evidence of sexual reproduction in eukaryotes is from the Stenian period, about 1.05 billion years old. [19] [20]Biologists studying evolution propose several explanations for the development of sexual reproduction and its maintenance.
Document Number Nine (or Document No. 9), more properly the Communiqué on the Current State of the Ideological Sphere [1] (also translated as the Briefing on the Current Situation in the Ideological Realm [2]), is a confidential internal document widely circulated within the Chinese Communist Party (CCP) in 2013 by the General Office of the CCP.
The Cairo Program is the first international policy document to define reproductive health, [20] stating: [1] Reproductive health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity, in all matters relating to the reproductive system and its functions and processes.
The American Fertility Society (now American Society of Reproductive Medicine) Classification distinguishes: . Class I—Müllerian agenesis (absent uterus). This condition is represented by the hypoplasia or the agenesis (total absence) of the different parts of the uterus:
Gregory IX distrusted the emperor, since Rainald, the imperial Governor of Spoleto, had invaded the Pontifical States during the emperor's absence. [1] In June 1229, Frederick II returned from the Holy Land, routed the papal army which Gregory IX had sent to invade Sicily, and made new overtures of peace to the pope.