When a volcano erupts, it not only releases magma, but also a great deal of heat, gas, and ash. What effect is a volcanic eruption most likely to have on the atmosphere?
-The gases could absorb more light energy in the atmosphere.
-The ash could cause less light to be scattered in the atmosphere.
-The gases could rapidly thin out in the atmosphere and have no effect.
-The ash could circulate in large quantities in the atmosphere for decades.