How is irritability related to fitness?

Irritability is closely related to fitness:
* shade-loving plants have adapted to the lack of light (leaf mosaic), in pine trees the lower branches with foliage die off
* in anticipation of a cold winter, the leaves of conifers are covered with a thicker layer of wax
* flowering plants have a bright corolla and aroma to attract pollinators – insects
* the back of the fish is dark and the abdomen is light
* fins for swimming, gills for breathing
* on land in living things – limbs and a certain color (protective, warning, imitating)
Irritants contribute to greater survival of organisms and the abandonment of numerous offspring (invisible to enemies and successful in obtaining food)

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.