Final answer:
Carbohydrates, lipids, proteins, and nucleic acids are the four main types of biological macromolecules in living organisms.
Explanation:
Carbohydrates, lipids, proteins, and nucleic acids are the four main types of macromolecules. These biological macromolecules are essential components of cells and play diverse roles in living organisms. Carbohydrates provide energy, lipids are important for insulation and energy storage, proteins have structural and functional roles, and nucleic acids carry genetic information.
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