Whenitcomestofindingtheirwaybackhome,micearedefinitelyinthefirstplace.Infact,theyfindtheirwayaroundinmuchthesamewaywedo!
RecentlyscientistsatOxfordUniversityfoundthatwoodmicehavearareability.Theyactuallycreateatypeof"roadsign"totellthemselveswhichwaytogo.Untilnow,mostpeopledidnotthinkanimalscoulddothis.
Woodmiceliveinlargeopenfields.Onepartofthefieldlooksmuchlikethenext.Scientistswonderedhowwoodmicekeptfromgettinglostwithoutlandmarks.Howdidtheyrememberwheretheyhidtheirfood?Bystudyingagroupofthesemice,researcherslearnedthattheseclevermicepileseeds,leavesandothermaterialsatplacestheywanttoremember.
Whatistrulyremarkableisthatthesemarkersarevisual.Woodmicehavelargeeyes.Theyrelyontheirvisiontofinetheirway.Housemice,bycontrast,followtheirownsmelltogetbacktotheirnests.However,leavingasmalltrailinanopenfieldcouldbeverydangerous.Enemiesmightuseittotrackdownthelittlemice.Woodmicedonothavetoworryaboutthis.Otheranimalsdonotknowwhattheirmarkersmean.
Researcherswantedtolearnmoreaboutthisunusualbehavior.Todoso,theyneededtostudythemicemoreclosely.Theydecidedtoplaceagroupofmiceinsideaboxandfilmtheiractivity.Theyalsoputsomesmallplasticdiscsandasmallamountoffoodinthebox.Soonthemicebeganmovingthediscs.Theyusedthemtohidefood.Theyalsoshiftedthemfromplacetoplaceastheymovedfartherandfartherawayfromtheirnestingarea.
Researchersbelievethisnewinformationmaychangehowpeoplethinkabouttheselittlecreatures,andoneofthefirststepsinrealizingthatmicearenotassillyasweprobablyoriginallythought.Onethingseemscertainthattheseremarkableroadsignswillbeafocusofscientificresearchforsometimetocome.
(Note:AnswerthequestionsorcompletethestatementsinNOMORETHANTENWORDS.)
81.Howarewoodmicedifferentfromhousemice?___
82.Therareabilitywoodmicehaveis___.
83.Researchersfoundwhenwoodmicemovedfartherandfartherawayfromtheirnestingplace,they___
84.Whydoscientistsstudywoodmice?___
(Note:Answerthequestionsorcomple
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