They are part of VOCAL EXPRESSION COMPETENCY.
Vocal expression involves using the voice in a variety of ways in order to express our feelings about a subject. Voice modulation can also be used to capture an audience attention.
Answer:glycerol
Monomers are the building blocks of the four basic macromolecules of life- monosaccharides are the monomers of carbohydrates, amino acids are the monomers of proteins, glycerol/fatty acids are the monomers of lipids, and nucleotides are the monomers of DNA.
Explanation:
Everything except from zero is a significant figure so I would say there would be 4