Why is the ozone layer so important for our survival?
Correct answer: D. The ozone layer absorbs harmful radiation which may cause skin cancer if exposed to
- A. It provides air resistance to objects entering Earth, hence burning and destroying meteors before they can land on the surface
- B. Ozone disintegrates into oxygen which is needed for cellular respiration
- C. Ozone captures free radicals such as chlorine which may damage human tissues if inhaled
- D. The ozone layer absorbs harmful radiation which may cause skin cancer if exposed to
Explanation
The stratospheric ozone layer is Earth's "sunscreen" - protecting living things from too much ultraviolet radiation from the sun, and preventing the development of cancers.
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