what impact can a volcanic eruption have on climate?
a climate is warmed from the heat of the eruption.
b climate is cooled as dust falls from the sky.
c climate is warmed as dust increases the greenhouse effect.
d climate is cooled as dust blocks incoming sunlight.
explain why

C. Climate is warmed as dust increases the greenhouse effect.

The volcanic eruption can be defined as a natural geological event, in which the hot lava, rocks, dust and gases expel out from the earth crust. These materials liberate with great force and rapid explosion. The volcanic eruption occurs due to the development of heat and pressure in the lower mantle of the earth's interior.

The gases like carbon dioxide, carbon monoxide and sulfur dioxide are released in the atmosphere. These hot gases and dust particles are responsible for increasing the temperature, causing warm climatic conditions, which is likely to be responsible for greenhouse effect.  

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b. read the phase at the intersection of any given temperature and pressure.