Which of these statements correctly describes why methane and carbon dioxide are considered to be significant greenhouse gases?
I. Both have permanent dipole moments that change with vibration of the molecule.
II. Neither has a permanent dipole moment, but a dipole moment is produced when the molecule vibrates.
III. The concentration of carbon dioxide in the atmosphere increases when fossil fuels are mined and burned.

Question

Quizplus · Accepted Answer

Methane and carbon dioxide do not have permanent dipole moments, but they can produce dipole moments when they vibrate, making them effective greenhouse gases. Additionally, the concentration of carbon dioxide increases with the burning of fossil fuels.

Which of These Statements Correctly Describes Why Methane and Carbon