In the context of the hierarchy of human needs, Abraham Maslow asserted that each lower need in the hierarchy comes from a deficiency.
Maslow's hierarchy is often depicted as a pyramid with physiological needs at the base, followed by safety needs, love and belonging needs, esteem needs, and finally self-actualization at the top. Each level represents a different type of need, and typically, individuals must satisfy lower-level needs before addressing higher-level needs.