They will be selected out by competition; the analogy is to natural selection in biological evolution.

他们会被竞争所淘汰；如同生物进化中的自然选择。

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There are as well as density-dependent biological factors such as disease, predation, and intraspecific competition .

还有密度制约的生物因素，诸如病害、捕食和种内竞争等。

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But undergraduates are already making extensive use of standard biological parts, through the annual International Genetically Engineered Machine competition launched in 2005.

但通过2005年发起、一年一度的国际基因工程机器设计大赛(International Genetically Engineered Machine competition)，大学生们已在大量使用标准生物部件。

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Gallagher says competition is biological, hardwired into humans in order to ensure the survival of the species.

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The study, published in the international journal Biological Invasions, suggested that European hares exhibit strong competition for habitat space and food resources with native species, most notably other hare species.

BBC: Irish hare under threat from 'European brown' hare