Because the time span of Earth's past is so great, geologists use the geologic time scale to show Earth's history.
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I think earthquakes or volcanoes.
Answer:
the pattern of the ages of rocks of the seafloor support the theory of plate tectonics because it tells us if the tectonic plates at the seafloor are spreading apart in a divergent boundary
solpe can affect materials by how large and the diameter of the slope. Explanation:
