Answer:
Vision and hearing.
Step-by-step explanation:
The individuals on the basis of their age are classified into the infants, teens, young, adult and old individual. Different biological changes occurs in the different stages of the individual.
The adult individual with the increases age shows some physiological changes. These individuals can check their sense with the proper techniques and equipment. The individual gradually loses the sensitivity of the vision and hearing. The physical fitness and energy also decreases with the increasing age.
Thus, the answer is vision and hearing.