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MUNDARIJA: KIRISH…………………………………………………………………….....3 I.BOB.PECKAKNAMOLAR QABILASINING EVOLYUTSION RIVOJLANISHI VA TARIXIY SHAKLLANISHI. 1.1.Evolyutsion jarayonlarda pechaknamolarning ahamiyati……………………………………………………………………….5 1.2.Pechkaknamolar qabilasining insonlar va tabiy resurslarga ta'siri……………………………………………………………….11 II.BOB.PECHAKNAMOLAR QABILASINING QISHLOQ XO'JALIGI VA BIOLOGIK XILMA-XILLIK XUSUSIYATLARI 2.1.Biologik xilma-xillikni saqlash va ekologik muvozanatni tiklashda pechaknamolarning ro’li……………………………………………………….15 2.2.Pechaknamolar qabilasining turlari va turli xususiyatlari………………....23 XULOSA………………………………………………………………………29 FOYDALANILGAN ADABIYOTLAR……………………………………..30
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