not much but plz be quite i have a headache i need to go in zavance mode
Well it does a good amount but it also helps by using the ash to make nutrients for crops and the lava forms minerals like gold, silver, copper, tin, iron and many more
a lot
they can cause atleast 400 million dollars of damage , maybe more . & that answer that says " why do you need to know ? " is a crap answer .(=
because they have so much power and we are unable to stop the pain and destruction they cause