Anywhere from 20 to 50 years old. It depends on what kind of monkey you have.
While being born, monkeys mate with their mothers
Yes.
Old World generally refers to monkeys of Africa and Asia; New World, to monkeys of the Americas. In Old World monkeys, the nostrils face downward and are narrow. New World monkeys have round nostrils facing to the side. The dental formula of the larger New World monkeys includes 3 premolars. Old World monkeys have 2.
Old World monkeys live in Africa and Asia. When the Americas were discovered, people called the western hemisphere the New World. Europe and the rest of the known lands were called the Old World. That is why monkeys of the Americas are called New World monkeys and those from Africa and Asia are called Old World monkeys.
Apes are more closely related to Old World Monkeys.
There are 2 major classifications of monkeys. There are Old World and New World Primates. Marmosets and squirrel monkeys are new world primates. Old world primates are roloway and mandrill monkeys.
good and proper nutrition
There are lots of places online where one can find facts about good nutrition. Some of these websites are "Ripped Recipes", "Men's Health", "Discover Good Nutrition" and "Good Nutrition Ideas"
old monkeys
Monkeys belong to the family Cercopithecidae, which includes old world monkeys such as baboons, macaques, and vervet monkeys.
monkeys have tails
New World Monkeys. Many New World monkeys in the family Atelidae, which includes howler monkeys, spider monkeys and woolly monkeys, have grasping tails often with a bare tactile pad. This is in contrast with their distant Old World monkey cousins who do not have prehensile tails.