3وَهُوَ الَّذي مَدَّ الأَرضَ وَجَعَلَ فيها رَواسِيَ وَأَنهارًا ۖ وَمِن كُلِّ الثَّمَراتِ جَعَلَ فيها زَوجَينِ اثنَينِ ۖ يُغشِي اللَّيلَ النَّهارَ ۚ إِنَّ في ذٰلِكَ لَآياتٍ لِقَومٍ يَتَفَكَّرونَMir AneesuddinAnd He it is Who stretched the earth1 and made in it mountains2 and rivers. And of every fruit in it, He has made pairs of two. He covers the night over the day. In that there are certainly signs for a people who reflect.Drifting Continents: It is slated mat millions of years ago, all the southern continents formed one single land mass. Later they drifted apart to occupy their present positions. This is popularly known as the theory of 'Drifting continents. If one closely examines the world map, even today these continents appear to fit as a jig-saw puzzle.Sedimentary Mountains: When two land masses approach each other, the sediments at the bottom of the ocean between them get compressed and sometimes rise above the sea level as mountains. A good example of this is the Himalayan mountains which rose from the ocean named Tythus due to compression of India towards Tibet. In Arabic, the word 'Mursaha' is used for anchoring of ships in water. In this verse (3), the word 'Rawasiya' from the same root alphabets used for mountains could mean those mountains, the material of which was, originally deposited in water as sediments and later lifted up, that is, sedimentary mountains.