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SAINS | Menganalisa Mekanisma Pernafasan Manusia

Sistem pernafasan manusia terdiri daripada beberapa struktur dan organ yang penting. Bermula daripada mulut dan rongga hidung, seterusnya bergerak ke trakea (salur pernafasan) dan seterusnya bergerak ke paru-paru.Pada paru-paru, akan berlaku pertukaran gas oksigen (yang akan digunakan oleh badan) dengan gas...

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