Answer:
Proteins, carbohydrates, nucleic acids, and lipids are the four major classes of biological macromolecules.
Macromolecules are made up of single units known as monomers that are joined by covalent bonds to form larger polymers.
Explanation:
Answer:
physical change alert the form of appearance of the matter but does not turn any substance in the matter into a different substance.
C, population, is not a formal taxonomic category
