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Author Question: Children in the stage of concrete operations have typically mastered what Piaget called "conservation." (Read 39 times) |
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.