- SB13-1449 SB13-1449 Aug 8, 2013


Age-related physical changes that have a biological basis and are universally shared and inevitable.
HGD, Chapter 13, p.334


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  • Gray hair
  • Wrinkles
  • Changes in visual acuity
  • Changes in auditory acuity


Primary aging is like the effects that take place in fruit. If you leave a fruit without it being eaten or preserved, then the fruit will inevitably get wrinkled and soft. This same idea applies to people through pimary aging.


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