What is waste?
How are the layers of schist separated into alternating light and dark minerals?
Explain what makes mountains appear purple?
What is vein in geology?
What is sedimentary rock?
Explain why did the continents spread apart?
Explain how are fossils formed?
How do geologists find out the age of mountains?
What is ore?
What is crude?
Soils take how many years to form?
When does an atoll start to form?
What is igneous rock?
How can we calculate or estimate the evaporation from lakes?
Tell me what's the difference between 'soft' rock and 'hard' rock geology?