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1、AustraliaAdventureAnimalsandBirdsClimateofAustraliaAustraliaisalargeislandcontinentinthesouthernhemispherewithadiverserangeofclimatezones.Thesevaryfromtropicalregionsinthenorththroughthearidexpansesoftheinteriortotemperateregionsinthesouth.Seasonalfluctuati
2、onscanbegreatwithtemperaturesrangingfromabove50°Celsiustowellbelowzero.Minimumtemperaturesaremoderatedbythelackofmountainsandtheinfluenceofsurroundingoceans.Australiaisrelativelyarid,with80%ofthelandhavingarainfalllessthan600milimetres.peryearand50%havingev
3、enlessthan300millimetres. MostAustralianslivenearthewettermoremoderatesoutheasterncoastsprimarilyinmajorcities.BecauseAustraliaisarelativelyclosed,it'scontactwiththeoutsideworldisveryfew,lessinfluencebythespeciesofalienspeciesinthelongevolutionprocess,thuse
4、volvedarelativelyindependentspeciessystem.And,theAustralianspeciesaffectedbyexternalshocksisless,sothatitcankeepsomeofthemorebackwardspecies,suchasmarsupialanimal,theanimalinothercontinentsalreadybecausethesurvivalofthefittestinnaturalselectionruletobeelimi
5、nated.So,therearesomanyrareanimalinAustralia.Why therearesomany rare animalsAnimalsofAustraliaBilby袋狸TheBilbyisasmallnocturnalcreaturefoundmainlyinNorthernTerritory.Theyhavelargeearslikerabbitsandeatsmallinsectsandvariousplants.Dingo澳洲野狗Dingosarefoundinvari
6、ousareasacrossAustralia,itmakesahowlingsoundthatisverydistinctive.Dingoesgenerallyeatmice,rabbitsandrats,althoughcanalsoattacklivestockwhenhungry.Echidna针鼹TheEchidnaisasmallcreature,whichhasafurryundersidewithsharpspinesonitsback.Echidnasliveinthedryandhotd
7、esertlandofAustralia,aswellaswithinthecoolerclimateoftheAustralianAlps.Echidnascatchinsectstoeat.Theygrowtoabout45cm.Asaformofprotectiontheyquicklyburythemselvesintheground,withonlytheirspinesstickingoutoftheground.Goanna巨蜥Goannasareatypeoflizardfoundinvari
8、ouspartsofAustralia.Theycangrowtoabout2metreslong,andcanbeaggressive,oftenmakingaloudhissingsound.Koala考拉KoalasaresmallbearlikecreatureswholivealongtheeastcoastofAustralia.However,koalasonlyliketoeatas
