What tense is the underlined verb in the sentence? will you have visited every u. s. state after this trip? a. future b. future perfect c. past perfect d. past

The underlined verb in the sentence is have visited.In this case, the tense of the underlined verb is B. future perfect. Future perfect tense is used to refer to events that would have happened if a possible event has happened first. This is the case of how the verb is used in the sentence

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.