Final answer:
Linolenic and linoleic fatty acids are essential fatty acids that the body cannot synthesize or produce enough of. They are important for brain function, heart health, and fetal development.
Step-by-step explanation:
Linolenic and linoleic fatty acids are categorized as essential fatty acids because the body does not synthesize or produce enough of these fatty acids on its own. They must be obtained from the diet to meet the body's needs. These fatty acids are important for various biological processes in the body, including brain function, heart health, and the development of a growing fetus.
Learn more about Essential fatty acids