C. 
Every change in a species is coded within the DNA. But the bird had lost a toe an accident. So the toe-loosing-option isn't true because not every bird looses his toe.
(Example: If a women gets bitten by a snake on the arm and gets the arm removed from her body and then in a year or so has a baby with her new husband. The baby won't be born with one arm because his/her mother lost her arm.) <span />
        
             
        
        
        
Answer:
The correct answer is option c."niche-picking".
Explanation:
Niche picking is a psychological term used to describe the tendency of people choosing environments that complement their hereditary abilities, including making friends who share their abilities and interests. Marvin practice of choosing circumstances where he can practice his natural skills in playing hockey is an example of niche picking.
 
        
             
        
        
        
PLATO USERS
![\left[\begin{array}{ccc}A\\B\\C\\D&Correct\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7DA%5C%5CB%5C%5CC%5C%5CD%26Correct%5Cend%7Barray%7D%5Cright%5D)
![\left[\begin{array}{ccc}Given&Information\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7DGiven%26Information%5Cend%7Barray%7D%5Cright%5D)
[ Found Dead On The Shore ]
[ Medium Size ]
[ Animal-Like ]
![\left[\begin{array}{ccc}Answer&Choices\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7DAnswer%26Choices%5Cend%7Barray%7D%5Cright%5D)
[ a ] as nekton
[ b ] as a benthic organism 
[ c ] as plankton
[ d ] <u><em>"There Is Not Enough Information To Tell."</em></u>
 
        
             
        
        
        
Answer: they have to maintain homeostasis, so they remove waste to do so..
 
        
             
        
        
        
Answer:                              The correct option is b (false). 
Explanation:                         As is is cleared from the figure that when lactose is absent, the lac repressor binds tightly to the operator. It gets in RNA polymerase's way and prevent transcription.