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

391

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Explain when does an atoll start to form?

409

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Define the cambrian?

406

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Explain what layer of the earth does magma form?

441

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

445

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

417

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Define china clay?

407

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Define a hypothesis?

407

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Explain the examples of techno fossils?

433

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

406

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explain how do geologists find out the age of mountains?

446

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Explain why did the continents spread apart?

428

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Explain where are mountains of the moon?

400

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Explain what are the examples of techno fossils?

401

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What are the major factors that influence mass movements.

415

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