How and why does Juno curse Echo?

Juno, or Hera, was jealous of echo's beauty. Echo loved to talk a lot. So, she put two and two together and cursed echo that she could never speak and only echo, echo, echo

Explanation:

the rhetoric device being used to persuade the audience is pathos.

what is a theme?

ans: the implicit idea of a written work of literature is called a theme.

so, the only theme of "birdfoot's grampa" by joseph bruchuc is that as a human being one should always remember the value of every life on earth.

the grampa is stopping the car again and again to save those little toads from washing away in the heavy rain is an act of kindness and humanity.