Aggressionisfightinginstinctinbeast野兽andman,whichisdirected有指导的；有管理的againstmembersofthesamespecies.Itistheorized创建理论thatinnaturalconditionsaggressionhelpstoensuresurvival幸存ofindividuals个

Question

Aggression is fighting instinct in beast野兽 and man,which is directed有指导的；有管理的 against members of the same species.It is theorized创建理论 that in natural conditions aggression helps to ensure survival幸存 of individuals个人的 (and thus因此 the species).by preventing too dense密集的 a population from developing发展中的 and exhausting使耗尽的 all of its food sources根源.Fighting is generally一般地 considered to be a trait特点 characteristic特有的 of males男性的 and uncharacteristic不典型的 of females女性的.however,many but not all female mammals哺乳动物 exhibit aggression during the postpartum产后的 period时期 in defense of their young.
The great animal behaviorist行动主义者 Konrad Lorenz observed观察；研究 that in every
individual the readiness准备就绪；愿意 to fight is greatest in thae most familiar place:in
the middle of its territory领土.As the distance距离 from territory increases,readiness to
fight decreases减少 proportionately成比例地,相称地.this was not the case with my pet rat大
老鼠;he was ready and willing to beat up搅拌 his neighbors the minute he stepped举步,行走
through their door.what causes some rats to be more aggressive than others?there is
certainly evidence that aggression证据 has a genetic遗传的 basis,at least in some animals.

Answer 1

Aggression 是暴力的行为,这里指攻击.
攻击/进攻是人类和动物战斗/反抗的本能,是针对同一物种.（原文是指那几只老鼠,所以同种）
理论上讲在自然条件中攻击可以确保个人的存活,从而让种族存活,为了避免过于密集的人口而导致食物供给不足.
打架就是雄性的本色,在雌性身上很少见.
然而,many but not all （这里指大多数）雌性哺乳动物在产后会为了下一代而反抗（exhibit aggression - 体现攻击）可以忽略
下一节
伟大的动物行为学家Konrad Lorenz （人名）发现,每一个动物最常打斗的地方都是大同小异.在自己的领地上.（in the middle -正中央）
随着离自己领地的距离增加,打斗的意愿逐渐变小,由于周围越来多的陌生和可怕.（intimidating - 有威胁的）
tricki woo （一只老鼠的名字） 却与众不同.他早就准备好了 而且 一进门马上就开打.
是什么让某些老鼠比其他老鼠更具有攻击性呢?
有研究表明,攻击是原于基因的.
至少对某些动物来说.相对而言,它们就属于更具有攻击性的品种.（some strains = 某些品种）