What effect can a very large volcanic eruption have on earth's climate
 A it will warm the earths surface as more heat is trapped by the dust particles 
B it will warm the earth's surface as more lava is released by the volcanic eruption 
C it will cool the earth's surface as more snow will fall with the presence of more condensation nuclei
D it will cool the earth's surface as radiation from the sun is blocked from entering the atmosphere
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