what's the difference between 'soft' rock and 'hard' rock geology?
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what is animal charcoal?
What is what are some of the sub-disciplines within the field of geology?
How old is the earth? How has the earth evolved since formation? How do you calculate the age of earth?
Explain the difference between a semi-precious and a precious stone?
What is the difference between the geoid and the surface of the earth?
What is hematite?
Explain how are the layers of schist separated into alternating light and dark minerals?
Which type of rock is critical for the formation of geysers?
Differentiate between a semi-precious and a precious stone?
What is roasting?
What is ablation?
Explain how do we know magma does not originate in the liquid outer core?