Agriculture is the cultivation of land and breeding of animals and plants to provide food, fiber, medicinal plants and other products to sustain and enhance life.
The oldest old comprises of individuals who are at the age of 85 or more. It is also known as the f<u>ourth age of human life</u>. This group of population has a unique set of demographic features such as high levels of comorbidity, high use of medical care and services, and presence of more female than male.
Paul Baltes and Jacqui Smith determines that the developmental period of oldest old is marked by sizable losses in cognitive potential, chronic stress, and frailty.