Despite its wide and long-term use, the BSC like others is not without controversy, for example because these concepts cannot be applied to prokaryotes, and this is called the species problem.
Alxidmat net ta harokat tolas chajret , BSC inta deɣ ijja fal as majrad chund awa ijjan wi yadnen, almital fal as ismawan win war addoben a tan ajin prokaryote tan tolas awen isim net muchakil wan ich-ikilan n imudaran