243
MUNDARIJA
Kirish ..................................................................................................3
I bob.
BALIQCHILIKNING XALQ XO‘JALIGIDAGI
AHAMIYATI ......................................................................... 10
II bob.
BALIQLARNING KELIB CHIQISHI
VA BIOLOGIYASI
2.1. Baliqlarning kelib chiqishi .......................................................... 15
2.2. Baliqlar biologiyasi .................................................................... 16
2.3. Baliqlarning harakati .................................................................. 18
2.4. Jinsiy dimorfizm ......................................................................... 18
III bob.
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