What is irritability? Give examples of irritability in organisms.

the ability of a living organism to respond to external environmental influences by changing its physicochemical and physiological properties.
Examples of irritability; reactions to light, temperature, sound or mechanical stress, etc.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.