I believe this connect-wall can be resolved as follows:
Group 1: -ANE
ARCane, MUNDane, HUMane and PROFane
Group 2: -ENE
CAROTene, BENZene, OBSCene and EPICene
Group 3: -OL
PLASMASol, CONSol, EXTol, FOLDERol
Group 4: -ONE
GRAVESTone, OVERTone, CONDone, HISTone
What do these 4 groups have in common? These are:
Hydrocarbon suffixes used in ORGANIC CHEMISTRY.
- Compounds ending in '-ANE' have single C-C bonds between all carbon atoms;
- Compounds ending in '-ENE' have at least one -C=C- carbon double bond;
- Compounds ending in '-OL' contain a -C-OH functional group (alcohols);
- Compounds ending in '-ONE' are 'ketones', with the -C=O functional group.
This ties in with the title, of course, since:
Organic chemistry lies at the very core of all carbon-based living organisms and life as we know it! Pretty much everything, everywhere...