Explain which type of rock is critical for the formation of geysers?

746

---

Explain when does an atoll start to form?

862

---

Define the cambrian?

791

---

Explain what layer of the earth does magma form?

804

---

Explain which of the earths interior layers have been drilled and sampled?

766

---

Explain where would you expect to find the oldest basalt on the floor of the atlantic ocean?

754

---

Define china clay?

768

---

Define a hypothesis?

736

---

Explain the examples of techno fossils?

848

---

Explain the general statement regarding the temperature of water in oceanic depths?

744

---

explain how do geologists find out the age of mountains?

819

---

Explain why did the continents spread apart?

804

---

Explain where are mountains of the moon?

803

---

Explain what are the examples of techno fossils?

765

---

What are the major factors that influence mass movements.

759

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