Why is it important for the human body systems to work together?

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .

is this a question? wassup