Athena!!!! for the life of me i know this one as background knowledge!!
Benefits, as a result of the BNM method, include a significant reduction in ambient air pollution, thereby reducing environmental and health impacts. A decreased use of coal leads to considerable cost savings, fires last longer and are ready for cooking much sooner.
You would call a bus a guagua in C. Cuba.
In Spanish, the word guagua means a bucket, however, in colloquial everyday speech, the Cubans also refer a bus as a guagua. The word is not that new, actually, as it has been used with this meaning since the 19th century in Cuba
The term that best completes the statement above would be "aria." It is a part of the opera wherein it expresses the music of the ensemble in such a way that it dictates the tone of the opera. It is usually accompanied by an instrument and it is not necessarily song by the opera singer.