Why is the ozone layer so important for our survival?
Correct answer: D. The ozone layer absorbs harmful ultraviolet radiation from the sun.
- A. It provides air resistance to objects entering Earth, causing them to burn up.
- B. Ozone breaks down into oxygen which is essential for breathing.
- C. Ozone traps harmful chemicals like chlorine to prevent tissue damage.
- D. The ozone layer absorbs harmful ultraviolet radiation from the sun.
Explanation
The stratospheric ozone layer is crucial because it acts as Earth's "sunscreen," absorbing the majority of the sun's harmful ultraviolet (UV) radiation. This protection is vital as excessive UV radiation can lead to skin cancer, cataracts, and other health issues, as well as harm ecosystems and wildlife. The other options are incorrect because they attribute roles to the ozone layer that belong to the broader atmosphere or misrepresent its chemical interactions.
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