How does the tone of the poem, "Parting after a quarrel" by Eunice Tietjens add to the overall theme?

C.because of physics now you just gotta remember physics.

The poem is an unconventional sonnet; it develops a main idea in the first twelve lines, and is capped by a big thought in the final couplet. the poem follows a narrator describing the industriousness of nature’s creatures, preparing for the coming spring. all of creation is at work, but the speaker is sullen as the only creature he can see who finds himself without an occupation.