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Curious Kids: why is blood red?

By Theresa Larkin, Associate professor of Medical Sciences, University of Wollongong

Why is blood red?

– Asher, 6 years 11 months, New South Wales

What a great question about something in our body, Asher.

Blood is inside our body, but we see it on the outside when we bleed, like when we get a cut or a nose bleed.

Blood is red because of something called haemoglobin. Haemoglobin is…

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