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  1. Hace 1 día · Teenage pregnancy, also known as adolescent pregnancy, is pregnancy in a female adolescent or young adult under the age of 20.. Worldwide, pregnancy complications are the leading cause of death for women and girls 15 to 19 years old. The definition of teenage pregnancy includes those who are legally considered adults in their country. The WHO defines adolescence as the period between the ages ...

  2. en.wikipedia.org › wiki › Social_mediaSocial media - Wikipedia

    Hace 1 día · The PLATO system was launched in 1960 at the University of Illinois and subsequently commercially marketed by Control Data Corporation.It offered early forms of social media features with innovations such as Notes, PLATO's message-forum application; TERM-talk, its instant-messaging feature; Talkomatic, perhaps the first online chat room; News Report, a crowdsourced online newspaper, and blog ...

  3. en.wikipedia.org › wiki › TigerTiger - Wikipedia

    Hace 1 día · The tiger (Panthera tigris) is a member of the genus Panthera and the largest living cat species native to Asia.It has a powerful, muscular body with a large head and paws, a long tail and orange fur with black, mostly vertical stripes. It is traditionally classified into nine recent subspecies, though some recognise only two subspecies, mainland Asian tigers and the island tigers of the Sunda ...

  4. Hace 1 día · Centers for Medicare and Medicaid Services logo. Medicare is a federal health insurance program in the United States for people age 65 or older and younger people with disabilities, including those with end stage renal disease and amyotrophic lateral sclerosis (ALS or Lou Gehrig's disease). It was begun in 1965 under the Social Security Administration and is now administered by the Centers for ...