Answer:
collision
Explanation:
Most volcanoes form at the boundaries of Earth’s tectonic plates. These plates are huge slabs of the Earth’s crust and upper mantle, which fit together like pieces of a puzzle. These plates are not fixed, but are constantly moving at a very slow rate. They move only a few centimeters per year. Sometimes, the plates collide with one another or move apart.
C the size of glaciers in alaska
It’s d the sometimes swampy coniferous forest of high northern latitudes, especially that between the tundra and steppes of Siberia and North America.
