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is¿ ffi,
m%:u nysiai%dú bkaøsh hs.
tal ffi,slhs.
iïNjh uOHp¾óh hs.
me;,s mkqjkag ( ma,eáfy,añka;ia jxYhh) wdfõKslhs.
tala fl,jrla wkaOj wjika jk w;r wfkla fl,jr wka;# ffi,Sh
m%Kd,hlg újD; fõ.
tneúka m%d.a jDlalsld (protonephridia) j¾.hla f,i i,lkq ,efí.
m%Kd, tlsfkl iïnkaO ù wjidkfha idok ;ks kd<h újrhlska
foayfha msg;g újD; fõ.
ffi,h m%dlama,diaóh m%irj,ska iukaú; h.
tajd ndysr ueos msrjqï ffi, w;r mj;shs ffi, l=yrh ;=< mlaIau f.dkqjlska iukaú;
is¿jla msysghs.
ueosmsrjqï ffi,j,ska is¿ ffi, ;=<g we;=¿ jk nysiai%dú øjH is¿ ffi,fha l=yrh ;=<g i%djh
jk w;r is¿fõ l%shdfjka wka;# ffi,Sh m%Kd,h Uiafia msg;g .uka lrhs
wjidkfha tu m%Kd, tl;= ú idok fmdÿ nysiai%dú m%Kd,h Uiafia nysiai%dú
øjH foayfhka msg;g .uka lrhs
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