How much lithosphere is submerged into the asthenosphere?
a. 10%
b. 30%
c. 70%
d. 90%
ANS: D
Much like an iceberg, the submerged portion is approximately nine times the size of that which is
exposed. Information can be found in the section Earth's Inner Structure Was Gradually Revealed.
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Which conditions promote the growth of coral reefs?
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Which of the following is TRUE regarding asbestos?
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