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.
Asceticism within Catholic tradition includes spiritual disciplines practiced to work out the believer's salvation by expressing one's repentance for sin and cultivating the virtues, with the ultimate aim of purifying the heart and mind, by God's grace, for encounter with the Father, Son and Holy Spirit.