Answer:
North American plate and the San Juan de Fuca plate,
Step-by-step explanation:
i hope this helps
The Puget Sound area is prone to deep earthquakes due to the Juan de Fuca tectonic plate's subduction under the North American Plate at 3.5 to 4.5 cm a year as part of the Cascadia subduction zone
Hope dis help
5.8m questions
7.6m answers