Question

bullen discontinuity is also known as​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

The core is made of two layers: the outer core, which borders the mantle, and the inner core. The boundary separating these regions is called the Bullen discontinuity. Outer Core. The outer core, about 2,200 kilometers (1,367 miles) thick, is mostly composed of liquid iron and nickel.