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.
ascetic-someone who practices self denial as a spiritual discipline. abstainer. religious person-a person who manifests devotion to a deity. puritan-someone who adheres to strict religious principles; someone opposed to sensual pleasures.