Final answer:
Brazil's lack of significant seismic and volcanic activities is due to its location on a stable tectonic plate away from major fault lines and subduction zones.
Explanation:
Earthquakes and volcanic activities have not been significant in Brazil recently due to the country's location on a tectonic plate away from major fault lines and subduction zones, resulting in lower seismic and volcanic activity.
The absence of these events in Brazil can be attributed to the stability of the South American Plate on which the country sits, in contrast to regions like the Pacific Ring of Fire with high seismic and volcanic activity.
Research has shown that elastic strain buildup in the crust is limited in Brazil, reducing the likelihood of significant seismic events.
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