Explain the difference between a semi-precious and a precious stone?
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Explain the process of fossil formation?
What is non-renewable resource?
Describe the formation of igneous rocks?
Define loam soil?
What is coal?
Contrast the process that forms igneous rocks with the process that form metamorphic rocks?
Explain how has the earth changed since it was formed?
Explain the name of the largest volcano in the world?
What is crust?
Explain how continental heat flow is produced?
What is mineralogists?
Explain the mantle made of?