english: If we look around us, much of what surrounds us started life as various rocks and sludge buried in the ground in various places in the world.
non_english: Ak sa rozhliadneme, väčšina toho, čo nás obklopuje, začalo svoj život ako rôzne skaly a usadeniny pochované hlboko v zemi na rôznych miestach sveta.