种內个体之間的关系問題,是中学同学最感兴趣的問題之一,然却是教师感到最伤腦筋的問題。因你若說种内沒有“斗爭”,則对自然界中实际存在的一些“斗爭”現象,如:雄性动物在繁殖季节时的斗爭;蜘蛛在交配后,雌性个体对雄性个体的殘杀;松林的自然稀疏;作物在过度密植情况下某些个体的死亡等等就很难解释。你若承認种內有“斗爭”,則斗爭的結果又 The relationship between individuals within the species is one of the most interesting issues for secondary school students, but it is the most nerve-wracking problem for teachers. If you say that there is no “struggle” within the species, there are some “struggle” phenomena that actually exist in the natural world, such as: the struggle of the male animals in the breeding season; the spiders after the mating, the killing of male individuals by female individuals; the pine forest The sparse nature of the crop; the death of certain individuals in the case of overcrowding, etc. is difficult to explain. If you admit that there is a “struggle” in the species, then the result of the struggle is again