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1、AustraliaAdventureAnimalsandBirdsClimateofAustraliaAustraliaisalargeislandcontinentinthesouthernhemispherewithadiverserangeofclimatezones.Thesevaryfromtropicalregionsinthenorththroughthearidexpansesoftheinteriortotemperateregionsinthesouth.Seasonalfluctuationscanbegreatwithtemper
2、aturesrangingfromabove50°Celsiustowellbelowzero.Minimumtemperaturesaremoderatedbythelackofmountainsandtheinfluenceofsurroundingoceans.Australiaisrelativelyarid,with80%ofthelandhavingarainfalllessthan600milimetres.peryearand50%havingevenlessthan300millimetres. MostAustraliansliven
3、earthewettermoremoderatesoutheasterncoastsprimarilyinmajorcities.BecauseAustraliaisarelativelyclosed,it'scontactwiththeoutsideworldisveryfew,lessinfluencebythespeciesofalienspeciesinthelongevolutionprocess,thusevolvedarelativelyindependentspeciessystem.And,theAustralianspeciesaff
4、ectedbyexternalshocksisless,sothatitcankeepsomeofthemorebackwardspecies,suchasmarsupialanimal,theanimalinothercontinentsalreadybecausethesurvivalofthefittestinnaturalselectionruletobeeliminated.So,therearesomanyrareanimalinAustralia.Why therearesomany rare animalsAnimalsofAustral
5、iaBilby袋狸TheBilbyisasmallnocturnalcreaturefoundmainlyinNorthernTerritory.Theyhavelargeearslikerabbitsandeatsmallinsectsandvariousplants.Dingo澳洲野狗DingosarefoundinvariousareasacrossAustralia,itmakesahowlingsoundthatisverydistinctive.Dingoesgenerallyeatmice,rabbitsandrats,althoughca
6、nalsoattacklivestockwhenhungry.Echidna针鼹TheEchidnaisasmallcreature,whichhasafurryundersidewithsharpspinesonitsback.EchidnasliveinthedryandhotdesertlandofAustralia,aswellaswithinthecoolerclimateoftheAustralianAlps.Echidnascatchinsectstoeat.Theygrowtoabout45cm.Asaformofprotectionth
7、eyquicklyburythemselvesintheground,withonlytheirspinesstickingoutoftheground.Goanna巨蜥GoannasareatypeoflizardfoundinvariouspartsofAustralia.Theycangrowtoabout2metreslong,andcanbeaggressive,oftenmakingaloudhissingsound.Koala考拉Koalasaresmallbearlikecreatureswholivealongtheeastcoasto
8、fAustralia.However,koalasonlyliketoeatas
