This is an irregular verb and the conjugations need to be memorized. A short lesson explains how. Mentir - French Verb Conjugations Learn how to conjugate mentir, an irregular -ir French verb. This is not an easy verb to conjugate, so you will need a good lesson to show you how.
Metamorphism occurs because some minerals are stable only under certain conditions of pressure and temperature. When pressure and temperature change, chemical reactions occur to cause the minerals in the rock to change to an assemblage that is stable at the new pressure and temperature conditions.
Metamorphic rocks form from preexisting rocks (either igneous, sedimentary, or other metamorphic rocks) that have been altered by the agents of metamorphism, which include heat, pressure, and chemically active fluids. During metamorphism some of the material must remain solid.igmatites, fall into a transition zone somewhere between. âtrueâ igneous rocks and âtrueâ metamorphic rocks. I. Metamorphism A. The transformation of one rock into another by temperatures and/or pressures unlike those in which it formed B. Metamorphic rocks are produced from 1. Igneous rocks 2.