From its beginning, the main features of the metric system were the standard set of interrelated base units and a standard set of prefixes in powers of ten. These base units are used to derive larger and smaller units that could replace a huge number of other units of measure in existence.
There are many vitamins present in oranges. Photo Credit Medioimages/Photodisc/Photodisc/Getty Images. Oranges are well known for their high concentration of vitamin C, but the citrus fruit also contains many other vitamins and nutrients. Oranges also contain vitamin A, many of the B vitamins, and vitamin E, making them a regular part of a healthy and balanced diet. Vitamin A is an important nutrient for vision, and for healthy skin.
One clementine orange supplies 131 milligrams of potassium, which is 3 percent of the 4,700 milligrams you need each day. A similar-sized amount of canned mandarin oranges contains 136 milligrams of potassium. Both clementine and mandarin oranges deliver tiny doses of iron, magnesium and calcium, too. similar amount of canned mandarin oranges provides about 34 milligrams of vitamin C. Mandarin oranges contain significantly more vitamin A than clementines, which have only a trace amount.