volcanoes are very hot it can burn down any thing and could result in serious injury or even death.
no useful effects
they ruin the earth.
potato
is the study of the effects of weather on people useful research
Lava and rock explode out of the volcano then lava pours down the volcano covering the land then turning into rock making the volcano bigger.
Useful effects of UV are also there. Filters, locks etc use UV.
it effects it by making trees die
a new land form
people will be killed, and other things
If we had the technology
An epicentre in a volcano is where the whole volcano erupted and when the primary and secondary effects started
Neither is particularly useful.