“To A Mouse”What does Burns say about man’s dominance over animals? What does Burns reveal about carefully laid plans in stanza 7?

To me, Burns is saying that man's domination of the
animals is both unjustified and harmful.

You can see that
Burns thinks that this dominance is not justified from what he says in Stanza 2.  There,
he talks about himself as being a companion of the mouse -- they are both born of the
Earth and therefore he is not better than it is.

He also
acknowledges at length the fact that he has harmed the mouse with his plow.  Stanzas 2-6
all have this idea in them to a greater or lesser
extent.

Stanza 7 simply says that both mice and men have
their plans destroyed by forces bigger than them.