作业帮动物保护及几种动物濒危的历史,要英文的要做英文课件,最好能用英文写出关于一种动物面临的原因（像人类为动物的毛皮）,并写出面临灭绝之前是什么样的情况,现在又有什么保护措施,这
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动物保护及几种动物濒危的历史,要英文的要做英文课件,最好能用英文写出关于一种动物面临的原因（像人类为动物的毛皮）,并写出面临灭绝之前是什么样的情况,现在又有什么保护措施,这
动物保护及几种动物濒危的历史,要英文的
要做英文课件,最好能用英文写出关于一种动物面临的原因（像人类为动物的毛皮）,并写出面临灭绝之前是什么样的情况,现在又有什么保护措施,这个物种处于什么样的情况.
最好以时间变化写,写已灭绝动物的历史原因也可.
请在10.27号十点前给我,
动物保护及几种动物濒危的历史,要英文的要做英文课件,最好能用英文写出关于一种动物面临的原因（像人类为动物的毛皮）,并写出面临灭绝之前是什么样的情况,现在又有什么保护措施,这
Abstract
Human activities can expose populations to dramatic environmental perturbations,which
may then precipitate adaptive phenotypic change.
We ask whether or not phenotypic changes
associated with human-disturbed (anthropogenic) contexts are greater than those associated
with more ‘natural’ contexts.Our meta-analysis is based on more than 3000 rates of phenotypic
change in 68 ‘systems’,each representing a given species in a particular geographical area.
We find that rates of phenotypic change are greater in anthropogenic contexts than in natural
contexts.This difference may be influenced by phenotypic plasticity — because it was evident
for studies of wild-caught individuals (which integrate both genetic and plastic effects) but
not for common-garden or quantitative genetic studies (which minimize plastic effects).
We also find that phenotypic changes in response to disturbance can be remarkably abrupt,
perhaps again because of plasticity.In short,humans are an important agent driving
phenotypic change in contemporary populations.Although these changes sometimes
have a genetic basis,our analyses suggest a particularly important contribution from
phenotypic plasticity.
Keywords:contemporary evolution,Darwins,Haldanes,invasion,microevolution,rapid evolution
你看看有用吗,有什么问题可以再问我~
袖狗
human kill them
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