Fact 1: The emission of sulfur dioxide causes acid rain. Fact 2: Sulfur in the coal becomes sulfur dioxide when burned. Given the two facts above, acid rain can be a result of:?
OPT:
(A). burning;
(B). citric acid;
(C). flow of electrons;
(D). fashion;
(E). acid wash;
(F). chemical changes;
(G). burning coal;
(H). Pollution;
Answer:
(G).