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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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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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Thyroid conditions may make getting pregnant impossible.

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The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Sexual and asexual reproductive cells of fungi. Sexual and asexual reproductive cells of fungi.
Feedback mechanisms of the thyroid gland: (1) stimulus; (2) release of TSH; (3) release of thyroid h Feedback mechanisms of the thyroid gland: (1) stimulus; (2) release of TSH; (3) release of thyroid h
Lawn spread or colony count streaking. Lawn spread or colony count streaking.
Palpating for rebound tenderness: Rapid release of pressure Palpating for rebound tenderness: Rapid release of pressure
The origin and spread of modern H. sapiens, reconstructed from genetic and fossil evidence. The origin and spread of modern H. sapiens, reconstructed from genetic and fossil evidence.
Termination of translation by release factor (eRF) proteins in eukaryotes Termination of translation by release factor (eRF) proteins in eukaryotes
Video: Cellular defenses (natural killer cells, phagocyte types & process of phagocytosis)

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