文章top ten facts about elephants.doc

文章top ten facts about elephants.doc

ID:35986692

大小:42.50 KB

页数:4页

时间:2019-04-29

文章top ten facts about elephants.doc_第1页
文章top ten facts about elephants.doc_第2页
文章top ten facts about elephants.doc_第3页
文章top ten facts about elephants.doc_第4页
资源描述:

《文章top ten facts about elephants.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库

1、Elephantsareahugepartofpopularcultureandshowupasmetaphorsacrossallmedia.Theyformapartofreligiousbeliefsandareoftenassociatedwithwisdomoraltruism.However,manypeoplewholiveoutsidethenormalrangeofelephantsareunfamiliarwiththemanyinterestingfactsaboutthem.This

2、listgivesanoverviewofteninterestingareasaboutelephants.10.TypesofElephantInEnglish,whenwesay‘elephant,’weareactuallyreferringtoseveraldifferentspecies.Until2010,only2speciesofelephantwerescientificallyrecognized.However,genetictestinghasrevealedthattherear

3、eatleast3species.ThesearetheAsianelephantalphasmaximus,theAfricanbushelephantloxodontaAfricana(alsocalledthesavannahelephant),andtheAfricanforestelephantloxodontacyclones.TheAsianelephantisthesmallest,andhassmallearsandtusks.Theyhavetwoprominentbumpsonthei

4、rforeheads.TheyholdtheirheadsmoreerectthanbothAfricanelephants,havenoprotrudingupperlip,andhaveasingleshortfinger-likelipattheendoftheirtrunkwhichtheyuseforfinemanipulationofobjects.BothAfricanelephantshavelargerears,althoughtheforestelephanthasmuchrounder

5、ears,arelesshairy,havelargertusks,roundedforeheads,andhavetwofinger-likelipsontheirtrunks.Theforestelephanthasrelativelystraight,downward-pointingtuskswhilstthebushelephanthasmagnificentlycurvedones.Mostelephantsarecrepuscular,meaningthattheyaremostactived

6、uringdawnandevening,althoughthisvariesduetolocalclimate.Unfortunately,allelephantspeciesareendangered.9.ReproductionHomosexualelephants,whicharewell-documented,mateyear-round,butanelephantcow(female)isfertileforonlyafewdayseachyear.Duringthistime,bulls(mal

7、es)willtrytocourtherbyusingritualsinvolvingvariousaffectionategesturesandnuzzles.Ifsheacceptsone,shewillrespondwithsimilargesturesandafter20minutesorsoofacourtingritualtheywillmate.Ifsheconceives,shewillbepregnantfor22months,longerthananyotherlandanimal.So

8、meelephantsinducelabourbyself-medicatingwithcertainplants.Thecalf(baby),whenborn,weighsover100kg.Elephantsarequadrupeds,sounlikehumans,theycanhaverelativelymuchwiderpelviseswhichgivesthemlowerinfantandmotherm

当前文档最多预览五页,下载文档查看全文

此文档下载收益归作者所有

当前文档最多预览五页,下载文档查看全文
温馨提示:
1. 部分包含数学公式或PPT动画的文件,查看预览时可能会显示错乱或异常,文件下载后无此问题,请放心下载。
2. 本文档由用户上传,版权归属用户,天天文库负责整理代发布。如果您对本文档版权有争议请及时联系客服。
3. 下载前请仔细阅读文档内容,确认文档内容符合您的需求后进行下载,若出现内容与标题不符可向本站投诉处理。
4. 下载文档时可能由于网络波动等原因无法下载或下载错误,付费完成后未能成功下载的用户请联系客服处理。