Why did the Mt. Pinatubo eruption result in global temperatures dropping almost two degrees?

How manyatoms of mercury are in 1.4214e+1 ml sample

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?