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  • The harmful UV rays are blocked before reaching Earth fro...
Multiple choice

The harmful UV rays are blocked before reaching Earth from the Sun. Which of the following gases block these rays?

  1. Carbon dioxide

  2. Ozone

  3. Hydrogen

  4. Nitrogen

  5. Oxygen

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

This is the correct option. Ozone gas does not allow the harmful UV rays to reach Earth from the Sun.

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