Which of the following is the most abundant hydrocarbon which is emitted into the atmosphere by biological activity?
A. Ethane
B. Methane
C. Poly Aromatic hydrocarbons
D. Pentane
Answer:B
Which of the following is the most abundant hydrocarbon which is emitted into the atmosphere by biological activity?
A. Ethane B. Methane C. Poly Aromatic hydrocarbons D. Pentane