Multiple choice

Ozone is important to mankind because it

  1. releases hydrogen in the atmosphere

  2. maintains the temperature of the earth

  3. creates a protective coverage against ultraviolet rays

  4. releases oxygen in the air
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The ozone layer in the stratosphere absorbs the majority of the sun's harmful ultraviolet radiation, protecting life on Earth.

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