Where the plate of the earth collide and pull apart.
(If you don't know what I mean by plates of the earth Wikipedia plate tectonics)
The only other places volcanoes occur is above hot spots
(hot spots are also explained on the plate tectonics Wikipedia page)
Yes. That is where most volcanoes occur.
earthquakes are most likely to occur on the rim of tectonic plates
Hawaii
They occur at plate boundaries (Pacific rim "Ring of Fire") or at mantle hot spots (Hawaii, Iceland).
convergent oceanic-continental boundaries
they are formed along the crustal movements of the earth.
Because they are
Most of them are in the Aleutian Islands.
around plate boundries.
mostly on techtonic plates by volcanos
Because it has the most volcanos.
indonesia 127 volcanos