Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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People about to have surgery must tell their health care providers about all supplements they take.
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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
Organization of the vertebrate nervous system.
Organization of the nervous system.
The spongy bone in the top of the femur changes density and organization during growth.
Animal carcasses like this South African wildebeest provide important nutrition for both hunters and
Tall safety stands can be used to provide additional support for the vehicle while on the hoist.
Provide the given and then write the formula and solve