Final answer:
The subject of the question is aging, which refers to the process of growing older and the associated changes in various aspects of life. Aging comes with challenges and is influenced by factors such as biology, lifestyle, and social aspects.
Step-by-step explanation:
The term in question is aging, which refers to the process of growing older and the associated changes in biological, emotional, intellectual, social, and spiritual aspects of life. Aging is a natural and inevitable part of the human life course.
Examples of the challenges faced during aging include the loss of independence, diminished physical ability, age discrimination, and susceptibility to diseases. Aging is influenced by various factors such as primary aging (biological factors), secondary aging (lifestyle factors), and social aspects of aging.
Some related terms in this context include life span (the maximum number of years an individual can live), life expectancy (the average number of years a newborn is expected to live), and longevity (the actual duration of an individual's life).