得到
  • 汉语词
  • 汉语典
当前位置 :
thelifecycleofabutterfly写一篇小作文,怎么写?7句
1人问答
问题描述:

thelifecycleofabutterfly

写一篇小作文,怎么写?7句

李龙飞回答:
  Thelife-cycleofabutterfly(andmothforthatmatter)isaremarkableseriesofchangesbetweenseeminglyverydifferentformsculminatingintheemergenceofabutterfly.Throughoutnaturetherearefantasticandfascinatingoccurrencesofmanykinds.Themetamorphosisofaneggtoabutterflyisjustoneofthosewonders.Thestorystartswithapairofbutterfliesmating.Thisenablesthefemaleseggstobefertilised.Likemanyotherspeciesinnaturethereisoftenacourtshiproutineprecedingtheactualmating.Somebutterfliesflyinspirals,sometimesthefemalelieswithherwingsinacertainposition.Thepurposeofanycourtshiproutine(humansincluded!)istodiscoverthesuitabilityofthepotentialmate.Partofthisprocessistodiscoverifthefemaleisalreadyfertilised(pregnantmightbeahumanparallel),thefemalecanreleaseapheromone(chemical)whichwillshowherunavailability,orjustnotfollowtheusualmatingroutine.Onceitisestablishedthatthepairingissuitablematingtakesplace.Seethepictureleftforatypicalexample.Thebutterfliesstaycoupledforaperiodoftime.Sometimesashorttimesometimeslonger.Itisnotunusualforthepairtoflywhilestillcoupled.Oncematedaprocessoccurswhichresultsinthefertilisationofthefemaleseggs.Thensheisreadytolayeggs.
最新更新
PC端 | 移动端 | mip端
百百课(baibeike.com)汇总了汉语字典,新华字典,成语字典,组词,词语,在线查字典,中文字典,英汉字典,在线字典,康熙字典等等,是学生查询学习资料的好帮手,是老师教学的好助手。
声明:本网站尊重并保护知识产权,根据《信息网络传播权保护条例》,如果我们转载的作品侵犯了您的权利,请在一个月内通知我们,我们会及时删除。

邮箱:  联系方式:

Copyright©2009-2021 百百课 baibeike.com 版权所有 闽ICP备2021002822号-13