Final answer:
The Earth's crust is made up of large landmasses known as tectonic plates that are constantly moving and interacting with each other.
Step-by-step explanation:
The Earth's crust is made up of large landmasses known as tectonic plates. These plates are constantly moving and interacting with each other, leading to various geological activities such as earthquakes and volcanic eruptions. The movement of these plates also contributes to the formation of mountains, ocean trenches, and other landforms. Examples of major tectonic plates include the Pacific Plate, North American Plate, and African Plate.
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