4. Which of the following is a primary characteristic of the Earth's mantle?
(A) Light, solid rock
(B) Uniformity of composition
(C) Dramatically increasing pressure
(D) Compressed, incandescent gas

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統計： A(2), B(0), C(6), D(0), E(0) #802942

Sandra

B1 · 2018/02/26

#2642041

There the rock is the subject of a battle between"increasing heat and growing pressure".