Question

Which of the following are greenhouse gasses?

a. CO2, CFCs (Freon), N2O
b. VOCs, CO, HNO3, H2SO4
c. Fly ash, soot, dust/dirt

Answer 1

Short Answer: A

Long Answer:

All the things listed in A are well known greenhouse gases. In 'B', there are no greenhouse gases, and 'C' contains no greenhouse gases either. (No gases)