The study of the atmosphere and the processes that produceweather and climate is. 11. The science of is the study of the universe. Formation of Earth 12. The hypothesis suggests that the bodiesof our solar system evolved from an enormous rotating cloudcalled the solar nebula.
Definition of selfâpurification. 1  1 : purification by natural process selfâpurification of water. 2  2 : purification of oneself.
asÂ·cetÂ·ic. n. A person who renounces material comforts and leads a life of austere self-discipline, especially as an act of religious devotion. adj. Relating to, characteristic of, or leading a life of self-discipline and self-denial, especially for spiritual improvement.