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.
Vitamins. Oranges and tangerines are a good source of vitamin C, folate and the antioxidant beta-carotene, which the body converts to vitamin A. An orange provides 70 g of vitamin C, 39 mcg of folate, and 93 mcg of beta carotene.Tangerines contain 23.5 mg of vitamin C, 14 mcg of folate and 136 mcg of beta-carotene.According to the Institutes of Medicine, adult men need 90 g of Vitamin C per day while women need 75 g. Recommended daily allowances for folate are 400 mcg per day for adults.rotein, Fat and Carbohydrates. Nearly all of the calories in both the tangerine and the orange come from carbohydrates. These include starches and sugars, which provide energy for the body, and dietary fiber. An orange has 15 g of carbohydrates with 1 g of protein and less than 1 gram of fat.