题目内容:
What.sthebestwaytoprotect,atender,greenseedlingfromthehungrystomachofdeer?Givetheseedlingbadbreath!Thesamechemicalthatgivespeoplebadbreathaftertheyhaveeatengarliccansavesmalltreesfrombeingeatenbyanimals.
Akindofchemicalselenium(硒),whichisalsofoundingarlic,isplantedinthesoilnearayoungtree.Thetree.srootsabsorbtheselenium,whichisthencarriedtotheleaves,
Fromtheretheseleniumisusedtoformachemicalcalleddimethyselenide(乙烷硒化物)---thesamechemicalmadeinthehumanmouthaftereatinggarlic.Asdeerwanderaroundlookingforfood,theysmelltheseedlings.leavesandleavetheplantsalone.
Theseleniumisimportant.W
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