How do the words palsied with fear best enhance the tone of this passage? o They highlight the narrator's awe and confusion. 0 They illustrate the narrator does not know why he is afraid. O They reveal the narrator is repulsed by what is happening. They show the narrator is petrified and shaking with dread.

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.