Author Question: Dead plant parts are known as ________ when they accumulate on the surface of the soil. A) humus ... (Read 103 times)

 

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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

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The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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