How Are Rocks Formed?
The Earth’s crust and upper mantle are collectively known as the lithosphere, from which the tectonic plates are composed. It is in the lithosphere that rocks are...
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Where Are Precious Stones Found?
Where Are Precious Stones Found? Precious Stones, or gems, are minerals used for adornment, and they are found in rocks. Rocks are divided into three groups. The...
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How Is It Possible to Estimate the Relative Age of Fossils?
How Is It Possible to Estimate the Relative Age of Fossils? It is possible to estimate the relative age of fossils, that is whether they came before or after a...
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