Genetic variation is the raw material of evolution. Without genetic variation, a population cannot evolve in response to changing environmental variables and, as a result, may face an increased risk of extinction.enetic variation is the raw material of evolution. Without genetic variation, a population cannot evolve in response to changing environmental variables and, as a result, may face an increased risk of extinction.
Both asceticism and monasticism have been adopted by worshipers of various faiths. In general, asceticism is the practice of strict self-denial as a means of attaining a higher spiritual plane. Monasticism is the state of being secluded from the world in order to fulfill religious vows.
Learner's definition of ASCETIC. [more ascetic; most ascetic] formal. : relating to or having a strict and simple way of living that avoids physical pleasure. an ascetic monk. an ascetic scholar. the ascetic [=severe, austere] life of monks. an ascetic diet of rice and beans.