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.
Best Answer: The calcium content of oranges is rather low. One orange contains six times less calcium than a glass of milk (8 oz. Milk: 300 mg, 1 orange: 52 mg). Calcium enhanced orange juice contains equal amounts of calcium like milk, but that is an artificial content. The Vitamn C content of one orange is about 70 mg, which is the daily required dosage for a human being. Milk does not contain Vitamin C.