The nutrient that is part of carbohydrates, proteins, and nucleic acids, and that forms biomolecules, is
nitrogen
carbon
magnesium
iron

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass