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Author Question: Magmas with the highest percentages (> 65) of silica are called ____. A)mafic B)felsic ... (Read 59 times)

roselinechinyere27m

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on: Jul 13, 2018
Magmas with the highest percentages (> 65) of silica are called ____.
 A)mafic
 B)felsic
 C)intermediate
 D)ultramafic
 E)ultrafelsic

Question 2

Briefly explain how the phylogeny of an extinct group can be determined.


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parker125

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

B

Answer to Question 2

If sufficient fossil material is available for a significant amount of geologic time, a group's evolutionary trend may be determined by changes in internal or external skeletal features.


roselinechinyere27m

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Reply 2 on: Jul 13, 2018
Excellent

hollysheppard095

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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