Question

how techtonics activities are deeply connected with plate boundaries​

Answer 1

Answer:

As the denser plate edge moves downward, the pressure and temperature surrounding it increases, which causes changes to the plate that melt the mantle above, and the melted rock rises through the plate, sometimes reaching its surface as part of a volcano.

Answer 2

Explanation:

On land, volcanoes form when one tectonic plate moves under another. ... In the ocean, volcanoes erupt along cracks that are opened in the ocean floor by the spreading of two plates called a mid-ocean ridge . Magma from Earth's upper mantle rises up to fill these cracks.