Which word from al gore's nobel prize acceptance speech gives the speech the most formal style?

Need with this plz someone me aspa really need with this! asap

How does the poem's mood and tone change in each of these stages of “o captain! my captain! ” by walt whitman? (i need an answer asap )

According to homer's iliad, which greek god was helen of troy's father? a. apollo b. poseidon c. zeus d. hades