This is False. It's False because by definition, values which are three standard deviations are less likely than values that are two standard deviations - if we're talking about the Gaussian/normal distribution that is.
Answer:
Explosive eruption—beware of ash!
Gases push out magma with great force!
Volcano quietly erupts due to low-viscosity magma!
High silica content of magma results in lava reaching sea level by morning
Explanation:
Underdeveloped sorry if I’m wrong