In contrast, a complex climax community, such as a temperate forest, will tolerate considerable damage from weather to pests.
相反,一个复杂的顶极群落,如温带森林,将承受天气和害虫所带来的大规模破坏。
Pests, such as rats, feed on rice and wheat, and already a major hazard to crops in Africa and Asia.
一些害虫,比如以谷物和小麦为食的鼠类,早已成为亚非两大洲农作物的主要危害。
Other times, the desired trait, such as the ability to resist certain pests, can be absent in plant genomes.
而另外的情况下,所需的特征,如能够抵抗某些病虫害的特征,不存在于植物基因组中。
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