job creating. as a source of energy, it's going to create lots of jobs, money invested in solar power creates two to three times more jobs than money invested in coal or natural gas. not 100% reliable. sun goes down or is heavily shaded, solar PV panels stop producing electricity.
Rhyme is basically a repetition of two or more words that sound alike. It is a widely used convention in many songs and different types of poetry like poems and sonnets among others. In a poem for example, the use of rhyme functions to unify the message of the said poem.
The mood is the overall feeling of the poem, this can be created by the tone or by the language choices of the poem, for example if the mood is sad there may be a lot of words that are related to death (connotations) there may also be lots of punctuation that slows the reader down, also the writer may use a rhythm that is quite somber.