Propose one advantage of being able to taste PTC.

Explanation:

It has been suggested, for example, that PTC tasters might enjoy an evolutionary advantage by avoiding bitter-tasting toxic compounds, and also that a genetically encoded ability to taste bitter compounds could be protective against nicotine and alcohol consumption that might otherwise lead to addiction.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms