Human beings generally have an aversion to bitter and sour foods. Some researchers suggest that this is because foods that are inedible or even poisonous are often bitter or sour. The tendency of human beings to find these potentially harmful foods repulsive is an example of .

Biological preparedness

Explanation:

Human beings generally have an aversion to bitter and sour foods. Some researchers suggest that this is because foods that are inedible or even poisonous are often bitter or sour. The tendency of human beings to find these potentially harmful foods repulsive is an example of biological preparedness.

According to research, foods that are inedible or poisonous are often bitter or sour there by causing the dislike of human beings towards bitter and sour foods.. This process is called biological preparedness

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