A mandarin is a fruit much like and orange or tangelo except that it's slightly smaller and the skin is usually easier to peel.
There is also a type of Chinese language with the same name but it's not used all over China but is used in some other Asian countries.
Hope this has helped
Yes, but make sure to not leave the white thingy on.
In Great Britain, sailors were given limes to eat - when aboard long-distance sailing vessels. Thus, they were called "Limeys". The vitamin C in limes prevented scurvy - as this is a disease which results from vitamin C deficiency. Nowadays, just eating some citrus fruits and/or taking vitamin C supplements prevent scurvy from occurring. Scurvy is very rare - in the United States, today. It does occur, however, in less developed parts of the world, especially in Africa.