a) pillow lava
Pillow lava only forms underwater, and occurs when lava is squeezed out of a crevice and solidifies incredibly quickly.
Answer:
Explanation:"[Earthquakes] don't trigger eruptions. They don't trigger volcanic activity. “But they can trigger changes in geyser behavior. ... According to the United States Geological Survey (USGS), the chances of a Yellowstone eruption is around one-in-730,000.
all i could find is this map.
