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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

The Dingo was the first placental mammal introduced to Australia, around 4000 years ago The Dingo was the first placental mammal introduced to Australia, around 4000 years ago
Hong Kong is a strange situation. A British colony since 1842, it was handed back to China in 1997 a Hong Kong is a strange situation. A British colony since 1842, it was handed back to China in 1997 a
Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa
Checklist of Developmental Skills: Birth to 5 years Cont. Checklist of Developmental Skills: Birth to 5 years Cont.
Toddler: 1–3 years. Toddler: 1–3 years.
The human eye, a product of 600 million years of evolution (Lamb, Collin, & Pugh, 2007). The human eye, a product of 600 million years of evolution (Lamb, Collin, & Pugh, 2007).
Video: Enzyme-Catalyzed Reactions

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