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Author Question: A student commented, A metamorphic rock must have a greater relative age than a sedimentary rock. Is ... (Read 140 times) |
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The horizontal fraction bar was introduced by the Arabs.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.