Answer:
Gases that lead to air pollution include carbon, nitrogen and sulfur oxides. Explanation:
A molecule is the smallest particle of a substance that exists independently.Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of twoatoms. ... A compound is a substance formed when two or more elementsare chemically joined.
D. Would Be Your Answer.
Remember that sound waves are Microscopic waves that carry sound and vibrations are what sound waves are made of.