Animal--Extinction动物灭绝 公开课

AnimalExtinction灭绝;消亡1.Readquicklytogetthemainideaofthetext.2.WhatwasdiscoveredinChaoyangCounty,LiaoningProvince?3.Whatarethepossiblereasonsforthedisappearanceofdinosaursreferedinthetext?•Animalshavedisappearedduringthelonghistoryoftheearth.Themostfamousoftheseanimalsaredinosaurs.Theylivedontheearthtensofmillionsofyearsago,longbeforehumanscameintobeingandtheirfutureseemedsecureatthattime.ThereweremanydifferentkindsofdinosaursandanumberofthemusedtoliveinChina.Theeggsoftwenty-fivespecieshavebeenfoundinXixiaCounty,NanYang,HenanProvince.Notlongagoararenewspeciesofbird-likedinosaurwasdiscoveredinChaoyangCounty,LiaoningProvince.Whenscientistsinspectedthebones,theyweresurprisedtofindthatthesedinosaurscouldnotonlyrunliketheothersbutalsoclimbtrees.Theylearnedthisfromthewaytheboneswerejoinedtogether.恐龙形成;产生检查;视察•Dinosaursdiedoutsuddenlyabout65millionyearsago.Somescientiststhinkitcameafteranunexpectedincidentwhenahugerockfromspacehittheearthandputtoomuchdustintotheair.Othersthinktheearthgottoohotforthedinosaurstoliveonanymore.Nobodyknowsforsurewhyandhowdinosaursdisappearedfromtheearthinsuchashorttime.•Weknowmanyotherwildplants,animals,insectsandbirdshavediedoutmorerecently.AccordingtoaUNreport,some844animalsandplantshavedisappearedinthelast500years.事件;事变灰尘ahugerockhittheearthputtoomuchdustintotheairthedustblockedthesun’slightplantscouldn’tgrowmanydinosaursdiedforlackoffoodOthersthinkstheearthgottoohottorthedinosaurstoliveonanymore.•Writeanarticleaboutyourfeelingsonwhatyouwilldotoprotectanimalsandourenvironment.Thankyouforlistening!