True/False
In general, extrusive igneous rocks are composed of mineral grains visible to the unaided eye, whereas mineral grains in intrusive igneous rocks are too small to be seen without magnification.
Correct Answer:

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Correct Answer:
Verified
Q8: Discuss the major sources of evidence for
Q9: Every mineral has distinctive and recognizable physical
Q10: Plastic solids respond to stress by deforming
Q11: Fractures called _ are common in rocks
Q12: Continental shields are _. <br>A)coastal mountain ranges<br>B)large,
Q14: Sandstone is an example of a(n)_. <br>A)pyroclastic
Q15: Which of these rocks is a common
Q16: Paleomagnetism helps scientists understand _. <br>A)the origin
Q17: Subduction occurs at transform plate boundaries.
Q18: The asthenosphere lies in the _. <br>A)inner