Which two geological processes appear to have been most important in shaping the present surface of Venus?

Question

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Volcanoes and tectonics appear to be the most important geological processes that have shaped the present surface of Venus. Volcanoes have produced widespread volcanic plains and shield volcanoes, while tectonics has created crustal fractures, rift valleys, and mountain belts. Impacts and erosion have played a lesser role in shaping Venus' surface features.

Which Two Geological Processes Appear to Have Been Most Important