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

675

---

Explain when does an atoll start to form?

801

---

Define the cambrian?

732

---

Explain what layer of the earth does magma form?

744

---

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

704

---

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

696

---

Define china clay?

705

---

Define a hypothesis?

678

---

Explain the examples of techno fossils?

758

---

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

688

---

explain how do geologists find out the age of mountains?

747

---

Explain why did the continents spread apart?

733

---

Explain where are mountains of the moon?

749

---

Explain what are the examples of techno fossils?

707

---

What are the major factors that influence mass movements.

692

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