WebIn geology, rock is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It iuded, its chemicalposition, and the way in which it is formed. Rocks form the Earth's outer solid layer, the crust, and most of its interior, except for the liquid outer mMVWja8vOQzg WebRock music is a genre of music started in America. It has its roots in 1940s and 1950s rock and roll and rockabilly, which evolved from blues, country music and other influences. According to the All Music Guide, “In its purest form, Rock & Roll has three chords, a strong, insistent back beat, and a EsMJDK0lAb0M WebRead a brief summary of this topic. rock, also called rock and roll, rock & roll, or rock ’n’ roll, form of popular music that emerged in the 1950s. It is certainly arguable that by the end of the 20th century rock was the world’s domit form of popular music. Originating in the United States in the 1950s, it ncIc6UM4Q4bL Webrock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth isposed and typically form recognizable and mappable volumes. Rocks aremonly divided into three major classes according to the processes that mdEyYUZ9Ax36
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