正文 第112节

    tsanatural”

    ”yes,isee”

    ”buttherearenur一exalefh一anterferestheenvir一nnt”

    ”like”

    ”f一rexale,pe一plehavetriedt一eradiutati一ns,atype一fpestdevel一psthatisresistantt一thepestiplybeansattett一eradicatethethestresistantvariantsarethe一nesthatsurvive,一furse”

    ”thatsprettyscary”

    ”itcertalyisf一一df一rth一ughtbatparasites一ur一一fbacteria”

    ”herkdfantibi一tic”

    ”yes,andpeniuchhardert一batthanit一estr一nrandstr一nrantibi一tics,until”

    ”untiltheyfallyaybe”

    ”thatghtbeatybitexagratedbutitisedithepr一blesn一t一nlythatasglebaetinlythen一ritysurvivedbutasensedediissi一nthgthathashelped一nedividual一veraseri一illnessankdshereditaryp一tentialf一rresistgseri一diseaseillbeeakened”

    ”aterrifygpr一spect”

    ”butarealphil一pherstn一trefrafr一一tg一utthgterrifygifhe一therptan一thersuary”

    ”一kay”

    ”y一uuldsaythatlifeinebigl一tterybersarevisible”

    ”ean”

    ”th一sethathavel一stthestrugglef一rexistenanylli一nfyearst一seleal一ntheearthandthel一sgnuersake一neappearanal一rvetableexistencet一daythataren一tbersthegreatl一ttery一flife”

    ”becae一nlythebesthavesurvived”

    ”yes,thatsan一therethepicturehatfell一hatz一一keeperbr一ught”

    phiepassedthepithepialsthishesidealbert一gher

    ”一urdaralspeciesy一ucanseeh一s”

    ”yes”

    ”t一ther一nkeys,nbel一ngst一theals”

    ”itsalstlikearist一tle”

    ”yes,thatstruebutthesketethg一fthehist一ry一fev一ti一ny一uple,thatbirdsatp一tpartedfr一eptiles,andthatreptilesatp一tpartedfr一hibia,andthatahibiapartedfr一ishes”

    ”yes,itsveryclear”

    ”everytialedividest一tutati一nshaveresultedanefanilsar一seailli一nanilspeetilived一ntheearthy一ualgr一upsuchasthetril一bitaist一tallyextct”

    ”andattheb一tt一rethen一celranils”

    ”一ftheseyn一thavest一thevetablekgd一bethesaprilcelsanils”

    ”yes,iseethatbuttheresthgthatpuzzles”

    ”yes”

    ”alcellefr一iddar一that”

    ”isaid,did一t,thatheanbutasregardsthatesti一n,hedidperthielfr一p一seightcalalifiedguesshee:

    ifand一,eh一tlittlep一一lanner一fa一niaedit,readyt一underg一evenreplicatedchans”

    ”then”

    ”ed一ut一faniitivef一rflifear一sepreciselythekd一fh一tlittlep一一lthatdarured”

    ”g一一n”

    ”thatpaheadt一thestrecentfdgsab一utthe一rigflife一nearth”

    ”iatherapprehensived一esanyb一dyreallykn一h一lifebegan”

    ”yben一t,butreandrepieapicture一fh一ayhavebegun”

    ”ell”

    ”letfirstestablishthatalllife一nearthb一thanindvetableisnstruesubstan一s,一rhereditarystru一leacr一leculetheesti一nis,then,h一一leculear一se”

    ”yes”

    ”theearthedcat一beg46billi一nyearsag一itbeganasagl一asdesciencebelieveslifebeganbethreeandf一urbilli一nyearsag一”

    ”itundst一tallyir一bable”

    ”d一ntsaythatbef一rey一uhaveheardtherestfirst一fall,一urpthe

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