As a plant grows toward the sunlight to gain maximum energy through photosynthesis, it is responding to a external stimulus
why?

No because you need oxygen for the plants to gain photosynthesis

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