IDNLearn.com offers a unique blend of expert answers and community-driven insights. Get the information you need from our community of experts, who provide detailed and trustworthy answers.

Why are there two arcuate ridges above the Mariana Subduction Zone instead of one?

A. The volcanic arc has been split in two
B. There are two downgoing slabs in parallel
C. The subducting slab is creating two bands of active volcanoes