What are the precursors that make up macromolecules? a. polymers b. sulfates c. carbohydrates d. monomers

First option A) Polymers

Option D is correct.

D.monomers

When small organic molecules bind together, they form larger molecules called biological macromolecules. Biological macromolecules fall into four categories: carbohydrates, proteins, lipids and nucleic acids.

Macromolecules are formed by repeating sub units called monomers.

the answer is "a.) well–developed vascular system."

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okay now i don't know this but for the pints nothing else to say bye