Where is subduction occurring on this figure of South America? 
Definitions:
Modality
The method or mode in which something exists or is experienced or expressed.
Interval Scale
A numerical scale where the order of values and the exact differences between them are known, but there is no true zero point.
Histogram
A graphical representation of the distribution of numerical data, where the data is split into bins or intervals, and the frequency of data within each bin is depicted by the height of a bar.
Bar Chart
A graphical representation of data using bars of different heights or lengths proportional to the values they represent.
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