asked 57.0k views
3 votes
The layer of the earth that is composed of rock, yet flows due to extreme heat and pressure, is known as the _____.

crust
upper mantle
outer core
asthenosphere

2 Answers

7 votes

Earlier in the body of text you are reading, you should be able to find the fallowing passage: "Upper mantle: solid rock that flows due to plasticity."

Answer: Upper Mantle

answered
User Peterboston
by
7.5k points
5 votes
It is the upper mantle.
answered
User KinoP
by
7.6k points
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