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- 1. The movement also creates gaps in tectonic plates, which reduces pressure on the mantle beneath it, allowing it to melt and push through.
- 2. The mantle makes up 84 percent of Earth’s volume, and though it’s solid rock, over the course of millions of years, it behaves like a liquid.
- 3. This leads the tectonic plates on top to slowly jostle one another.
- 4. The build-up and sudden release of friction from this movement can cause earthquakes.