A、mAjor rEAson For ConFliCt in thE AnimAl worlD is tErritory. thE mAlE AnimAl 【B1】 An ArE
A、thE sizE oF thE ArEA is 【B2】 to proviDE FooD For him, his 【B3】 AnD thEir oFF-spring. migrAting BirDs, For ExAmplE, DiviDE up thE BEst 【B4】 in thE orDEr oF" First ComE, First 【B5】 " thE lAtE ArrivAls mAy ACquirE 【B6】 tErritoriEs, But lEss FooD is AvAilABlE, or thEy ArE too ClosE to thE 【B7】 oF thE EnEmiEs oF thE spECiEs. whEn thErE is 【B8】 ovEr tErritory, AnimAls will Commonly usE ForCE, or A 【B9】 oF ForCE, to DECiDE whiCh will stAy AnD whiCh will go.it is intErEsting to notE, howEvEr, thAt AnimAls sEEm to usE only thE 【B10】 Amount oF ForCE nECEssAry to DrivE AwAy thE 【B11】 thErE is usuAlly no killing. in thE 【B12】 oF thosE AnimAls whiCh ArE CApABlE oF Doing EACh othEr hArm, thErE is A 【B13】 .For thE losing AnimAl to show thE winning AnimAl thAt hE wishEs to suBmit. whEn hE shows this, thE 【B14】 normAlly stops Fighting.AnimAls (EspECiAlly BirDs), whiCh CAn EAsily EsCApE From ConFliCt sEEm to hAvE no 【B15】 AgAinst killing, AnD EquAlly no mEChAnism For 【B16】 .thE 【B17】 BirD simply FliEs AwAy. howEvEr, iF two DovEs ArE 【B18】 in A CAgE, AnD thEy stArt Fighting, thEy will ContinuE to Fight until onE kills thE othEr. wE All think oF thE DovE As A 【B19】 oF pEACE AnD, in its nAturAl hABitAt, it is pEACEFul.But thE" pEACE" mEChAnism DoEs not 【B50】 in A CAgE.
A、stAtionED
B、pErChED
C．plACED
D．DEpositED