树木为何不能无限长高

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世界上的树木(包括高132米的王桉,115米的红杉“世界爷”)为何不能无限长高呢?根据达尔文的“自然选择”理论,现今的树木就是适应现今环境的佼佼者。试想,如果树木无限地长高,那就要招来风折雷劈等横祸;还会造成阳光、氧、水、养料供给不足,还要受温度等限
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