What is potash?
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Explain the difference between a semi-precious and a precious stone?
How continental heat flow is produced?
Explain the minimum depth needed for a feature to be considered a canyon?
Explain how old is the earth?
Which carbonate mineral reacts readily with cool dilute hydrochloric acid to produce visible bubbles of carbon dioxide gas?
What is engineering geologists?
You want to estimate the evaporation through lakes. How would you do it?
What is aggregates?
Tell me what's the difference between 'soft' rock and 'hard' rock geology?
What minerals attract lightning?
What is igneous rock?
What are the examples of techno fossils?