Gaseous sulfur dioxide is a compound that combines with water in the atmosphere to form acid rain. What is the primary source of sulfur dioxide?
A B C D
volcanic emissions combustion of fossil fuels destruction of tropical forests mining and mineral extraction
Question: Gaseous sulfur dioxide is a compound that combines with water in the atmosphere to form acid rain. What is the primary source of sulfur dioxide?
(A) volcanic emissions
(B) combustion of fossil fuels
(C) destruction of tropical forests
(D) mining and mineral extraction

Answer: (B) combustion of fossil fuels
Answer: (D) mining and mineral extraction
Question: Gaseous sulfur dioxide is a compound that combines with water in the atmosphere to form acid rain. What is the primary source of sulfur dioxide?
(A) volcanic emissions
(B) combustion of fossil fuels
(C) destruction of tropical forests
(D) mining and mineral extraction
Answer: (B) combustion of fossil fuels