Jawapan

2016-02-12T22:20:36+08:00
Drah beroksigen berwarna merah trang manakala darah trdeoksigen merah gelap 
2016-02-12T22:35:50+08:00
Oxygenated blood is bright red when oxygenated blood is dark red
Bkn ke both have haemoglobin?? Kan..