Is the ability to maintain your vehicle within your lane

The authors use the word “backbone” in lines 3 and 39 to indicate that

Dna is a polymer of which consist of a sugar, a phosphate group, and a a. amino acids; nucleotide b. nucleic acids; nucleotide c. nucleotides; nitrogenous base d. nucleotides; nucleic acid e. proteins; nucleotide

Compared with the cost of tuition, fees, and books for a traditional college course, the cost of a clep exam is: