Before a volcano erupts, there is normally an increase in earthquakes, you might see some volcanic ash come out, you might see an increase in gas or steam around the volcano, and you might see a change in height or shape of the land around the volcano.
Volcanoes that erupts are known as active volcanoes.
The last eruption of the Kyushu-Palau Ridge occurred in 2008, with volcanic activity reported from the underwater volcanoes in this region. The ridge itself is an active tectonic area in the western Pacific, but specific eruption dates can vary based on individual volcanoes within the ridge. Monitoring continues for any signs of future activity.
No
an eruption in the ground
it can damage a city
'Eruption' in relation to volcano-related disasters.
Phreatic Eruption (an explosive volcanic eruption)
volcanoes eruption
Hawaii
By looking at the rocks.
You die!
Signs of eruption are shown by Bulusan.