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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
![A William Jennings Bryan poster alludes to religion: “no crown of thorns” and no “cross of gold.” Br](https://biology-forums.com/gallery/47/medium_376716_26_08_15_11_16_36_2244824.jpeg)
![The Masses, a leading Socialist magazine, featured drawings by artists, including John Sloan, as wel](https://biology-forums.com/gallery/47/medium_376716_26_08_15_11_19_26_224531623.jpeg)