Such as population density, street layouts, number of enterprises, water depth.
比如，人口密度，街道状况，企事业数量，水的深度。
Physical factors such as population density also play a role in how tight a society is.
有形因素如人口密度也对一个社会多紧张起作用。
The actual level of intensity depends on such factors as the physical layout, population density, and productive activities of a metropolis.
实际的强度水平取决于诸如大城市的物理布局、人口密度和生产活动之类的因素。
Other factors, such as life-span, population density and fragmented time plant population has experienced, may also influence the genetic consequences of fragmentation.
其他因素也可能影响片断化的遗传后果，如植物的生活史、种群密度及种群经历的片断化时间等等。
This is influenced by factors such as plant population density and structure and the adaptability of pollinator as well the presence or absence of self-incompatibility mechanisms.
这主要受植物种群密度、结构，传粉者适应性和活动能力以及是否自交亲和等因素的影响。
Population parameters such as birth and death rates which vary with density are said to be density dependent.
如果种群参数如出生率和死亡率随种群密度的变化而变换，就可以说是密度制约的。
Population parameters such as birth and death rates which vary with density are said to be density dependent.
如果种群参数如出生率和死亡率随种群密度的变化而变换，就可以说是密度制约的。
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