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

745

---

Explain when does an atoll start to form?

861

---

Define the cambrian?

789

---

Explain what layer of the earth does magma form?

803

---

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

765

---

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

753

---

Define china clay?

767

---

Define a hypothesis?

732

---

Explain the examples of techno fossils?

847

---

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

741

---

explain how do geologists find out the age of mountains?

817

---

Explain why did the continents spread apart?

801

---

Explain where are mountains of the moon?

802

---

Explain what are the examples of techno fossils?

764

---

What are the major factors that influence mass movements.

758

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