What does the word commodity mean

In keats's "ode to a nightingale," to which of the following methods does keats not turn in his attempt to reconnect imaginatively with the "melodious bird"? - poetry - white wine - opium - sparkling red wine

The_of a story can be applied to other works of literature or to life.

How does the author introduces his idea of fish depletion in the first few pages of world without fish?