地球脉动-两极之间Planet Earth-From Ploe to Pole

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1、-FromPoletoPoleGroup2PlanetEarthNorth北极熊Polarbears.极昼Polarday北极苔原Arctictundra北美驯鹿caribouNotenoughenergyreachesgroundtoenabletreestogrow亚寒带针叶林Subarcticconiferous远东豹Amurleopards温带阔叶林temperatebroadleavesVariousbirds热带丛林jungle海豹Seals大白鲨Greatwhites海洋ocean雄帝企鹅MaleEmperorPenguins极夜pola

2、rnightSouthRepresentativeCreaturesPolarday极昼It’smarch.AndlightreturnstohighArctic,aPolarbearstirsfromherden.Heremergencemarksthebeginningofspring.Andthelittlebearscometotheirmothertogetfood.Theirmotherthathasnoteatenfor5monthsandhaslosthalfherbodyweightconvertsthelastofherfatres

3、ervesintomilkforherbabies.Temperature-30.Thebabiesstillneedtoliveintheshelter.Thesunwilldissolvetheice,whichwillhinderthebeartohuntitsfood(seal).Nearlyhalfofthebabybearswilldieinthefirstyearinthebrokenice.Polarbears北极熊Arctictundra北极苔原NorthernCanada’swildfrontierEveryyear3million

4、sofcariboumigrateacrosstheArctictundra(北极苔原）.Thisisthelongestoverlandmigrationmadebyanyanimal.Someherdstravelsover2000milesayearinsearchoffreshpastures.Thisisthelongestoverlandmigrationmadebyanyanimal.Therearewolvesinhangerschemingtocatchthenewlyborncalves.Thestrategyisthatrunni

5、ngdirecrlyattheherdtomaketheminpanicfirst,andthentrytocapturetheseparatedtheherd.Andnowit’seasiertotargetanindividual.caribou北美驯鹿Midsummerontundraandthesundoesnotset.Astheselatitudesthesun’sraysareglancing.Andnotenoughoftheirenergyreachesthegroundtoenabletreestogrow.temperatebro

6、adleaves温带阔叶林TheAmurleopard-therarestcatintheworld,syblolizethefragilityofournatureheritage.Thereareonly40Amurleopardsleftinthewild.Andthatnumberisfalling.Thecatshasbeenpushedtotheveryedgeofextinctionbyhuntingandthedestructionoftheirhabitat.Amurleopards远东豹Allanimals,rareorcommon

7、,ultimatelydependfortheirenergyonthesun.JungleInthetropicsthesun’sraysstriketheearthheadon,sothejunglegrowssovigorouslyand supportssomuchlife.Thisforestcoversonly3percentoftheplanet’ssurface,butitcontainsmorethan50percentofallitsplantsandanimals.Thereare42differentspeciesofbirds

8、ofparadiselivinginthegreatislandofNewGuinea,eac