![The four elements making 99% of living system are](https://www.gkseries.com/blog/wp-content/uploads/2021/12/Biomolecules-Multiple-Choice-Questions-and-Answers-136.jpg)
Q. The four elements making 99% of living system are
- CHOS
- CHOP
- CHON
- CNOP
Answer: CHON
Answer: CHON
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