Answer:
d. the waiting lists for organs are very long.
Explanation:
The waiting lists for organs are very long describes the U.S organ donation system.
The question doesn’t really make much sense
Most sports can help you get into shape but here are some examples
Tennis
Swimming
Soccer
Basketball
Answer:
Hayflick theory
Explanation:
According to Hayflick theory aging process is controlled by a biological clock which lie within each living cell. According to this theory human cells have a limited life span.
this theory explain the mechanisms behind cellular aging. It suggests that a normal human cell can only replicate and divide arount forty to sixty times before it cannot divide anymore, and will break down by programmed cell death or apoptosis due to which number of body cells experiencing abnormalities with age.