IMPINGEMENT SYNDROME 375 â¢ STRENGTHENING EXERCISES â¢ ImpingementSyndrome (Rotator Cuff Tendinitis, Bursitis)These are some of the initial exercises you may startyour rehabilitation program with until you see yourphysician, physical therapist, or athletic trainer againor until your symptoms are resolved.
First, a rock is composed of one or more minerals and sometimes mineraloids but do not have a crystal structure. A mineral is a chemical substance made up of one or more chemicals having a definite crystal structure. Rocks do not have a definite chemical composition whereas minerals do.
MINERALS. Rocks are made of natural, nonliving chemical substances called minerals. Some rocks contain only one mineral. For example, marble is made of the white mineral calcite. Most rocks, however, contain CRYSTALS of several different minerals.