In general, rocks are classified into three main groups;Igneous, Sedimentary and Metamorphic. Each of them has a separate method of formation. They are, however, associated with rock cycles, a fundamental theory in the geology that explains the transitions of rocks types on a geologic time scale...
Natural materials are materials that occur naturally in different types of environment. Natural resources are used to make food and fuel and to make other. SAMPLE SLIDE This is the bassoon. Listen to the sound clip. That’s so that no one else can copy their face! I have twenty shiny ma...