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Asthma cases in Americans are about 75% higher today than they were in 1980.

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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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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.

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Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

The three basic body plans of bilaterally symmetrical animals. The three basic body plans of bilaterally symmetrical animals.
Overview of gas exchange between the environment, blood, and cells. Overview of gas exchange between the environment, blood, and cells.
Metric bolt (cap screw) grade markings and approximate tensile strength. Metric bolt (cap screw) grade markings and approximate tensile strength.
Industrial Waste and the Impact on the Environment Industrial Waste and the Impact on the Environment
Testing Infants’ Knowledge Testing Infants’ Knowledge
A police record search of 250 incoming Grade 10 at a Secondary School shows that 26 had been ... A police record search of 250 incoming Grade 10 at a Secondary School shows that 26 had been ...
Video: HDL (high density lipoprotein)

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