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Author Question: In order for nitrate to form from soil organic matter, ________ must be present in the soil. A) ... (Read 152 times) |
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
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In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.