I am your wall and I ran :( into a dark place, deep in the dark, I don't need the light

Do you need me
Before I fade away?
(hmm...)

So I walk into the dead of night
Where my monsters like to hide​

Are you troubled over something?

Remember, even a little light cannot be engulfed by darkness. But it surely can light the regions around it.

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).