Question

Which group of elements correctly shows the main elements that make up living
things.

C, H, O, N

C, H, Cu, Ca

Fe, Cu, Au, Ag
,
Mg, Ca, C, N

Answer 1

C, H, O, N

all living things are made of molecules called “biomolecules”. all of these biomolecules have C, H, and O. proteins have N, so that makes it valid as well. hope this helps! (i am in AP biology and it is not what the other person said)