Answers

2015-08-06T22:01:49+08:00
Because of the Earth's magnetic field
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2015-08-07T15:23:31+08:00
One reason is due to Earth's magnetic field... But, Scientist didnt conclude it was made of liquid just because of that... It is due to many experiments that includes Earths Density from CRUST to MANTLE to CORE... The materials in which THE MANTLE has... and the heat needed for those materials for it to chemically react to physically change to liquid.
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