Q: What is the major role of a greenhouse gas that contributes to temperature rise of the earth’s surface?

• 1
  Transparent to both incoming sunlight and outgoing infrared radiation
• 2
  Stops both incoming sunlight and outgoing infrared radiation
• 3
  Lets outgoing infrared radiation pass through but stops incoming sunlight
• 4
  Lets incoming sunlight pass through but stops outgoing infrared radiation