Multiple choice

Which of the following is/are greenhouse gas(es)?

  1. Nitrous Oxide (N2O)
  2. Nitrogen (N2)
  3. Ozone (O3)

  1. Only 1

  2. Both 1 and 2

  3. 1, 2 and 3

  4. Both 1 and 3

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Greenhouse gases are those that can absorb and emit infrared radiation, but not radiation in or near the visible spectrum.