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Earth Sciences 6 Online
summermorgan:

All minerals in Earth's crust All minerals in Earth's crust: A. have a crystalline structure B. have no silicon in their tetrahedral structure C. are classified as ring silicates D. are classified as pyroxenes or amphiboles

UkuleleGirl:

Lets start off with what you know

summermorgan:

@ukulelegirl wrote:
Lets start off with what you know
which is nothing bc i just started this class

UkuleleGirl:

okay. Well, So you know nothing about the earth?

summermorgan:

@ukulelegirl wrote:
okay. Well, So you know nothing about the earth?
well yeah, ik it has been here for 4.543 billion years

summermorgan:

oh its A. isnt it?

UkuleleGirl:

YES! Correct good job

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