Which pair of animals from the video had a commensalist relationship where one benefitted while the other was relatively unaffected?

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

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

characteristics of hydrocarbons