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Author Question: Materials to be bleached must first be ____________________. Fill in the blank(s) with correct ... (Read 62 times) |
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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The horizontal fraction bar was introduced by the Arabs.
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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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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
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The human body produces and destroys 15 million blood cells every second.