What do you mean by this question
Answer:
Air born pathogens are minute creatures responsible for causing a variety of illness. These pathogens may be bacteria, virus or fungi and spread through a variety of mechanism. When an infected person sneeze, respiratory droplets add into air. These infectious droplets when inhaled by a healthy person he become ill.Example is flue virus.
In biological<span> taxonomy, </span>race<span> is an informal rank in the taxonomic hierarchy, below the level of subspecies. ... </span>Races <span>may be genetically distinct phenotypic populations of interbreeding individuals within the same species.
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Answer: stimulus (plural: stimuli).
Explanation: