What is clay?
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Explain how are fossils formed?
Define granite?
Explain the minimum depth needed for a feature to be considered a canyon?
How does a volcano erupt?
Where are mountains of the moon?
What is seismic?
Explain how has the earth changed since it was formed?
Which of the earths interior layers have been drilled and sampled? What are the deepest drilling projects on record?
How do you calculate the age of earth?
Name the three major types of rocks?
It was a boiling, burning pile of rubble effectively.
What is cementation stage?