D is the answer. A, B,C are absurd. Doing a little word right there.
Explanation:
mega=10raised to the power 6
kilo=10 raised to the power 3
centi = 10 raised to the power negative 2
Milli = 10 raised to the power negative 3
nano = 10 raised to the power negative 9
pico= 10 raised to the power negative 12
micro = 10 raised to the power negative 6
Balanced chemical equation: S(s) + O₂(g) → SO₂(g).
Sulfur change oxidation number from 0 to +4 (oxidation) and oxygen change oxidation number from 0 to -2 (reduction).
Sulfur dioxide (SO₂) is very common volcanic gas.
Fossil fuel combustion increases the acidity of rain because the sulfur dioxide is produced.
Because of fuel combustion, sulfur dioxide goes up into the atmosphere as the hot gases rise, than it reacts with water and oxygen in the air and form sulfuric acid.
C) coal !
Have a nice day!\
:D
