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Definition of a rock and the difference between a rock and a mineral ?
A rock is a mixture of one or more minerals. There are many kinds of rocks, and we will learn about them in following lessons. At this point, it is sufficient to know that a rock is a very general term that applies to most any hard, naturally occurring mineral deposit found at the surface of our planet. Rocks are usually a mixture of minerals, either melted or compressed together by forces within the Earth.
A common and excellent example of a typical rock is granite. Granite is a mixture of silica and feldspar minerals. You can easily see, with the naked eye, the different mineral deposits that make up this rock. A picture of granite is available in the multimedia enhancement of this lesson.
how do you find the contour interval
Anthropological Evidence Modern humans arose at a time when the Earth was going through a very cold and icy period called the Ice Age, which began about 75,000 years ago and
what is signal transduction?
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Chemical reactivity : The substances which react violently or produce flame on contact with water can be given suitable chemical treatment to convert them into nonreactive form be
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