The answer is It tells the reader what will be discussed.
Answer:
So that they can provide a better alternative to predicting the weather than observing animal behavior.
Answer:
When the narrator is comparing Penelope to Artemis and Aphrodite in the Odyssey, he means she looks like Artemis (Goddess of the hunt, forests and hills, the Moon, and archery) in chastity and like Aphrodite ( ancient Greek goddess associated with love, beauty, pleasure, passion and procreation) in beauty.
