Add spaces between the words in the following text: Examplesoftheserocktypesincludemarble,slate,gneiss,schist.TheycanbeformedbypressuresdeepinsidetheEarth,bytectonicprocessessuchascontinentalcollisions,orwhentheyareheatedupbyanintrusionofhotmoltenrockcalledmagmafromtheEarth'sinterior.
Examples of these rock types include marble, slate, gneiss, schist. They can be formed by pressures deep inside the Earth, by tectonic processes such as continental collisions, or when they are heated up by an intrusion of hot molten rock called magma from the Earth's interior.