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.
自然界爲何會容許雄性的存在？他們不會繁衍自己的後代，一個後果就是，能夠自體受精的動植物數量的成長率，是依賴有性生殖的兩倍。
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