The role Apollo plays in book 1 of the Iliad

1. What role does Apollo play in book 1 of the Iliad? 2. What causes Achilles' wrath in Book 1? What did Achilles do to his comrades because of his anger? 3. What role does Athena play in Book 8? How does Achilles kill Hector? What does he do to Hector's body?