The wear-and-tear theory of aging is weakened by the fact that ...

[craiczarry]

The wear-and-tear theory of aging is weakened by the fact that
 
  the human body cannot repair itself.
  many parts of the body wear out from use.
  the human body is able to repair damaged areas.
  machines cannot grow old.

Question 2

The notion that DNA regulates the aging process is referred to as the
 
  cellular accident.
  error catastrophe.
  genetic clock.
  free-radical hypothesis.

[whitcassie]

Answer to Question 1

the human body is able to repair damaged areas.

Answer to Question 2

genetic clock.

[craiczarry]

YES! Correct, THANKS for helping me on my review

[phuda]

Gracias!