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.
self-development noun [U]. âº the âact of deciding for yourself how to âimprove your âskills and taking âaction to do this: The Management âInstitute is âoffering a âweekend self-development âworkshop. (Definition of self-development from the Cambridge Business English Dictionary Â© Cambridge University Press). Browse. 1  self-correct.