Answer:
Seafloor spreading occurs along mid-ocean ridges large mountain ranges rising from the ocean floor.
Explanation:
The Mid-Atlantic Ridge, for instance, separates the North American plate from the Eurasian plate, and the South American plate from the African plate.
25% of Africa are deserts!
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Increasing "Pressure or Temperature" is used to identify the layers of the atmosphere
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Chilean central valley, and the Andes.