在现实世界中，此标准可能难以应用到相距遥远的种群，由地理环境分隔的种群，或是植物种群（化石显然也无法繁殖）。
Inpractice, this standard can be difficult to apply to organisms isolatedby distance or terrain or to plants (and, of course, fossils do notbreed).
二者存在的差异性主要是由彼此赖以生存的文化语境和自然地理环境的差别引起的。
While the causes of the differences are mainly from two aspects: broader cultural context as well as natural and physical environment.
该景观建筑是由三个要素组成：白色大理石，植被和水体，创造了一个陆地-海洋地理环境。
The landscaped building is made of three elements: white marble, vegetation and water, creating a land-liquid geology.
在一定程度上，人类饲养何种动物也是由气候和地理环境决定的，或仅仅是由某一特定地区可生存和种动物决定的。
To a certain extent the kinds of animals raised by man were also determined by climate and geography, or simply by the kinds of animals available in one particular area.
在一定程度上，人类饲养何种动物也是由气候和地理环境决定的，或仅仅是由某一特定地区可生存和种动物决定的。
To a certain extent the kinds of animals raised by man were also determined by climate and geography, or simply by the kinds of animals available in one particular area.
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