2015 · Q51
Ozone layer of the Earth's atmosphere is important for living organisms because it
General KnowledgeChemistry
- Aprevents entry of ultra-violet rays
- Bprevents entry of X-rays
- Cmaintains level of oxygen on Earth
- Dprevents acid rain on Earth
Explanation
The ozone layer in the stratosphere absorbs most of the Sun's harmful ultraviolet (UV-B and UV-C) radiation, protecting living organisms from it. It does not block X-rays, maintain the level of oxygen on Earth, or prevent acid rain. The answer is A.