Why does nature tolerate males? They produce no offspring of their own, one consequence of which is that populations of plants and animals capable of self-fertilisation, or “selfing”, grow at twice the rate of populations that depend on sexual reproduction.
自然界为何会容许雄性的存在？他们不会繁衍自己的后代，一个后果就是，能够自体受精的动植物数量的增长率，是依赖有性生殖的两倍。
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