What is crude?
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What is mantle?
What is the earths crust made of?
Explain why did the continents spread apart?
What is happening when a metamorphic rock is forming?
What is petroleum?
Explain what minerals attract lightning?
What is the difference between a canyon, gorge, and valley?
What is magma?
What is clay?
Explain the examples of techno fossils?
How has the earth evolved since formation?
What are the major factors that influence mass movements.