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Author Question: Some lava flows show a pattern of columns bounded by fractures. These columns are usually ... (Read 56 times)

P68T

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on: Jul 13, 2018
Some lava flows show a pattern of columns bounded by fractures. These columns are usually ____-sided.
 A)three
 B)six
 C)eight
 D)twelve
 E)twenty

Question 2

What does the appearance of red beds in the geologic record indicate about the atmosphere?


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ryrychapman11

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Reply #1 on: Jul 13, 2018
Answer to Question 1

B

Answer to Question 2

The atmosphere was oxidizing.


P68T

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Reply 2 on: Jul 13, 2018
Excellent

kthug

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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