Which form of struggle for existence, in your opinion, is the most intense?

Intraspecific struggle is most acute, as individuals have an ecological niche. Organisms compete for limited resources – food, territorial, males of some animals compete with each other for fertilization of the female, as well as other resources. To reduce the severity of the intraspecific struggle, organisms develop various devices – the delimitation of individual sites, complex hierarchical relationships. In many species, organisms at different stages of development occupy different ecological niches, for example, Lepidoptera larvae live in the soil, and dragonflies live in water, while adult individuals inhabit the ground-air environment. Intraspecific struggle leads to the death of less fit individuals, contributing to this natural selection.

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.