Which characteristic the grants show the result of natural selection?

I believe this is the answer you are looking for:

C. The size and shape of their beaks

Centration is the correct answer

The need activity of the nurse is to suction discharges from the trachea. current treatment approaches in the pressing consideration facilities or crisis offices are corticosteroids and nebulized epinephrine; steroids have demonstrated advantageous in extreme, direct, and even gentle croup. in the clear instances of croup, anti-microbials are not endorsed, as the etiology is viral