英語課件-動(dòng)物

EnglishCourseware-AnimalsAnimalOverviewIntroductiontoCommonAnimalsAnimalhatsTherelationshipbetweenanimalsandhumanscontents目錄01AnimalOverviewAnimalsaremulticellulareukaryoticorganizationsthatareabletosense,move,andrespondtoexternalstimuliTheyarethemostdiversegroupoflivingorganizationsonEarth,withover1.5millionspecificationsidentifiedtodateAnimalsareheterotrophic,meaningtheycannotproducetheirownfoodandmustconsumeotherorganismsororganicmatterforsustenanceTheyarealsomobile,meaningtheyarecapableofselfdirectedmovementThedefinitionofanimalsAnimalsareclassifiedbasedontheirphysiology,genetics,andotherbiologicalcharacteristicsintoover30phylaThemostwellknownphylaincludesChordata(whichincludesvertebrateslikefish,amphibians,reptilies,birds,andhorses),Arthropoda(whichincludesinsects,crustaceans,andspiders),andMollusca(whichincludessnails,clams,andoctopus)Withineachphylum,therearevariousclasses,orders,families,general,andspecificationsThisclassificationsystemhelpsscientistsunderstandtherelationshipsanddifferencesbetweendifferentanimalgroupsandtheircharacteristicsClassificationofanimalsAnimalsplayclinicalrolesinmaintainingthebalanceofecosystemsTheyareconsumersofplantsandotheranimals,promotingacriticallinkinthefoodchainTheyalsohelpdisperseseedsandpolarplantsAnimalsareimportantformaintainingbiodiversityEachspecificationhasuniqueadaptationsandbehaviorsthatcontributetothesurvivalofthespecificationsandoverallhealthoftheecosystemAnimalsalsoprovideimportantresourcesforhumansTheyprovidefood,clothing,andmedicineTheyalsoserveasmodelsformedicalresearchandareimportantforculturalandhistoricalreasonsTheimportanceofanimalsinnature02IntroductiontoCommonAnimalsMammalianisaclassofVertebrateanimalsthatproducemilktofeedtheiryoungTheyarecharacterizedbyhavinghair,threemiddleearbones,andaclosedtemporaryfixationTheclassincludesmanyfamilyanimals,suchashumans,dogs,cats,covers,andmiceMammalianCharacteristicsofMammalianProducemilkfortheiryoungHaveaclosedtemporaryfitMammalianHavethreemiddleearbonesHavehairorfurcoveringtheirbodiesMammalianBirdsareaclassofVertebrateanimalsthatarecharacterizedbyhavingfeatures,wins,andabeamBirdsaretheonlylivingmembersoftheaverageorderAnimalsareageneraltermusedtorefertoallnon-humanorganizationsItincludesallthedifferenttypesofplantsandanimalsthatexistonEarthBirdsandAnimalsAquaticanimalsareanimalsthatliveinwaterTheyincludefish,examples,reprotiles,andmarinemammalsAquaticanimalshaveadaptationsthathelpthemsurveyanddriveintheiraquaticenvironmentAquaticAnimalsCharacteristicsofAquaticAnimalsAquaticAnimalsLiveinwaterHavegirlsorlungstobreaktheunderwaterHavefinsorlimbsmodifiedforswimmingHavespecialadaptationsforlivingintheiraquaticenvironment01020304AquaticAnimals03AnimalhatsAnimalsthathuntfortheirpreyorscavengedeadanimalsforfoodExamplesincludelions,cheetahs,andhyenasHuntersandscavengersAnimalsthatfeedongrassandotherlowlyingplantsExamplesincludeants,sheep,andcowsGrazersAnimalsthatfeedonfruitsandberriesExamplesincludemonkeys,gorillas,andelementsFruiteatersAnimalsthatfeedoninsectsandothersmallinvertebratesExamplesincludeshrews,moles,andhedgehogsInsectivoresAnimalfeedinghabitsTerritorialanimalsAnimalsthatliveonland,includingforests,deserts,mountains,andgrasslandsExamplesincludelions,elements,andsnakesAnimalsthatliveintheocean,includingcorereefs,openwater,andseasExamplesincludeDolphins,Whales,andSeahorsesAnimalsthatliveinfreshwaterhabitatssuchasrivers,lakes,andpoundsExamplesincludefish,frogs,andwatersnakesAnimalsthatcanflyorglidethroughtheair,suchasbirds,bats,andflyingsquirrelsMarineanimalsFreshwateranimalsAirborneanimalsThelivingenvironmentofanimals04TherelationshipbetweenanimalsandhumansProvidelove,companionship,andemotionalsupporttohumansCompanyanimalsUsedincircles,movies,andotherformsofentertainmenttoperformtripsorstopsEntertainmentanimalsAssisthumanswithdisabilitiesorotherspecialneeds,suchasguidedogsforthevisuallyimpairedServiceanimalsUsedforvarioustasks,includingagriculture,security,andsearchandrescueoperationsWorkinganimalsTheroleofanimalsinhumanlifeTheimportanceofprotectinganimalsConservationofbiodiversity:AnimalsareanimportantpartofthebiodiversityonEarthandplayacriticalroleinmaintainingecosystemsSustainabledevelopment:Wildlifepopulationneedstobeprotectedforsustainabledevelopment,astheyprovidegoodsandservicesthatareessentialforhumanwellbeing,suchasfood,medicine,andtourismAnimalwelfare:Animalsreservetobetreatedhumanelyandwithrespect,andprotectingthemsafe