<u>Answer:</u>
solubility
<u>Explanation:</u>
• Solubility is the property of an object that makes it dissolve in a solvent, thus making it 'disappear'. This is what is happening in the question.
• Conductivity is the property of a material that allows it to conduct electricity, i.e., it allows electricity to pass through it.
At a depth of 930 miles (1,500 km), this rock is some 300 times stiffer than at the boundary between the upper and lower mantle, which is about 410 miles (660 km) deep.
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Answer:
Moving / sliding plates
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