Question

When a large volcano like Mt. St. Helen erupts, all life in the surrounding area is destroyed. The lava flows and forms new rock in the surrounding area. After several years, organisms, such as lichens and moss begin to recolonize the area.

Answer 1

Major volcanic eruption occurred at Mount St. Helens in 1980 and it is mainly located in the Skamania County, U.S. state of Washington.

Eruption was significant volcanic eruption that mainly occur in contiguous 48 U.S. states.

It is much more efficient for smaller 1915 eruption of Lassen Peak in California.

Eruption was preceded by a two-month series of earthquakes.