44. Proper housekeeping to prevent the formation of microbiological growths within a fuel system includes the prevention of water accumulations and the use of __________.

Biocides are used alongside water accumulation prevention to control microbiological growth in fuel systems. These chemical additives kill or inhibit microorganisms, unlike filters, heaters, or centrifuges which only remove physical contaminants. Proper fuel system housekeeping requires minimizing water and utilizing biocides to prevent corrosion, filter clogging, and engine damage.