Aplant’s response to its environment is referred to as
a. reflex
b. internal
c. tropism
d. unnatural

Tropism is a descriptive reaction of a certain stimuli on how an organism responds to the confronted stimuli which can be called positive tropism or negative tropism.
In positive tropism as the proposed answer toward  involves the organism leaning forward or direct to the acting stimuli whereas the negative tropism is exactly the opposite. 

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

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