Tai sao tom phai lot xac nhieu lan moi truong thanh
-Vi trong qua trinh lon len , au trung tom phai lot xac nhieu lan vi ta biet trong lop vo kitin cua tom co chua canxi → cung cap → de phat trien [ hay noi cach khac la lon len ] → tom phai lot xac do lop vo qua cung , khong the thay doi theo kich co cua tom.
Cach nhen san moi
-Tap tinh chang luoi ; chang day to khung , chang day to phong xa , chang cac soi to vong va roi cho moi
-Tap tinh bat moi ; nhen ngoam chat con moi , chich noc doc , treo roi troi chat con moi vao luoi , tiet dich tieu hoa vao co the moi , hut dich long tu con moi.
