5. in what two plate tectonic settings do most volcanoes occur?
at convergent plate boundaries at subduction zones and on lowland plains
at divergent plate boundaries (ocean ridges or rifts) and within tectonic plates themselves
at divergent plate boundaries (ocean ridges or rifts) and at convergent plate boundaries at subduction zones

at divergent plate boundaries (ocean ridges or rifts) and at convergent plate boundaries at subduction zones

Explanation:

I googled it, found the answer in an article called "Plate Tectonics and Volcanic Activity" on the National Geographic website.

the only other powers were germany russia and uk and they were too busy fighting each other wearing each other down   that the us was becoming strong and they were becoming weaker

b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.