Children pass through general stages of development in their creative growth.

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

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

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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Tip growth by a pollen tube.

World human population growth through history illustrates an exponential growth pattern.

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Social Development

General model of the association of histones and DNA to form nucleosomes

Author Question: Children pass through general stages of development in their creative growth. (Read 238 times)

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