Russian historical roots date back to when

The chemical or mechanical process by which rock is gradually broken down eventually becoming soil

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?

Hong kong, south korea, taiwan, and singapore are sometime referred to as the "four " because of their rapid industrial economic growth.