In order to understand the environmental consequence of incineration of garbage, the meaning of incineration first needs to be understood.
Incineration simply refers to the practice of destroy wastes or any other materials by burning.
The burning of garbage leads to the emission of smoke, particulate matters, oxides of sulfur, carbon, and nitrogen and many other pollutants into the atmosphere.
Hence, the statement that best describes an environmental consequence of incineration of garbage would be that <u>burning garbage adds toxins and pollution to the atmosphere.</u>