What is core? By what other name is it known as?
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The central part of earth that probably consists of dense nickel and iron alloy (Nife) is known as core. It is also known as Barysphere. It's temperature is estimated to be about 2700°C.
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What do you understand by mantle?
What is the position of mantle in the Earth?
State the composition of the SIAL layer.
State the properties of the core of the Earth.