I think the enzyme photolyase is activated by light and can repair thymine dimers caused by UV radiation. Exposure to UV radiation is the main factor that causes skin cells to become cancer cells. These enzymes are involved in the repair of ultraviolet light-induced DNA damage when activated by light absorption. 
        
             
        
        
        
Answer:
The answer is 6.4 ×  Joules
 Joules
Explanation:
This question wants to effectively test your knowledge of the names of the negative powers of 10, so first of all, before calculating, let me explain what each of the symbols in the units given in the question means:
Force = 8.0 pN = 8.0 ×  N
 N
displacement = 8.0 nm = 8.0 ×  N
 N
Now let us calculate the work.
work = Force × Displacement
work = 8.0 ×  × 8.0 ×
  × 8.0 ×  = 64 ×
 = 64 × 
= 6.4 ×  Joules (in standard form)
 Joules (in standard form)
 
        
             
        
        
        
They were adapted to an environment and once it is taken away the plants will slowly start to die. I'm not 100% :)