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Sweet potatoes are fairly inexpensive but very helpful for our health. It contains more vitamins (A, B, C, E), protein, starch, amino acids as well as over ten types of vital elements (calcium, magnesium, iron, zinc). In addition, the foodstuff comes with a abundant level of fiber that can stimulate stomach contractions. Another important thing is oligosaccharides in sweet potatoes maintain the elasticity, reduce blood levels of cholesterol and ease circulation in the blood vessels. Anxiety due to a general medical condition Colorful animal world is so interesting for humankind to explore. It is the diversity of genres with various life spans which leads to the ecosystem balance. It has been searched that the Galapagos tortoises can live during 177 years due to good adaptation for the environment; however, there are many life spans that are shortened by natural features. What animals have the shortest life expectancy? Let's discover!