The tectonic plates are made up of Earth's crust and the upper part of the mantle layer underneath. Together the crust and upper mantle are called the lithosphere and they extend about 80 km deep. ... The flowing asthenosphere carries the lithosphere of the Earth, including the continents, on its back.
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Answer:
The tectonic plates are made up of Earth's crust and the upper part of the mantle layer underneath. Together the crust and upper mantle are called the lithosphere and they extend about 80 km deep. ... The flowing asthenosphere carries the lithosphere of the Earth, including the continents, on its back.
Explanation:
tectonic plates