More info about CHNOPS: http://www.shef.ac.uk/~chem/web-elements/nofr-key/periodic-table.html

A text summary of the clickable map above, meant for web-crawlers and other automatic tools:
CHNOPS includes carbon
CHNOPS includes hydrogen
CHNOPS includes nitrogen
CHNOPS includes oxygen
CHNOPS includes phosphorus
CHNOPS includes sulfur
CHNOPS part of organic molecule

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