if in competition and amensalism , organism is not having any benifit with their interaction , then y tese kind of interaction exist in nature ????because no one in nature wants to loose anything
According to the competitive exclusion principle, species less suited to compete for resources should either adapt or die out. That is, one of the two competitors will always overcome the other, leading to either the extinction of this competitor or an evolutionary shift towards a different ecological niche. It is also known as Gause's law of competitive exclusion or Gause's law.
According to the evolutionary theory, competition within species and competition between species for resources plays a critical role in natural selection.