Multiple choice

Which of the following gases absorbs ultraviolet rays in the atmosphere?

  1. Helium

  2. Ozone

  3. Nitrogen

  4. None of these

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

Ozone (O3) in the stratosphere absorbs the majority of the sun's harmful ultraviolet radiation, protecting life on Earth. Helium, Nitrogen, and other gases do not have this specific protective function.