What is alliteration and how often does the original beowulf poet use alliterion

Phosgene is a chemical agent that is formed by decomposition of chlorinated hydrocarbon solvents by ultraviolet radiation.

In the play jack and algernon tell lies so that they may further pursue pleasure and avoid obligations. have you ever lied for such a purpose? do you think it is always wrong to lie, or are there circumstances when lying might be okay. what consequences can arise from lying? if you want share an experience where you either told a lie or were lied to and the consequences that happened because of the dishonesty

In paragraph 5, president obama remarks: “you know, when trayvon martin was first shot i said that this could have been my son. another way of saying that is trayvon martin could have been me 35 years ago.” how does president obama use rhetoric in this quote to contribute to the overall meaning of his speech?