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Cera Cera
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7 years ago
I've seen this question before but nobody has actually answered it.. :) Thanks in advance!
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wrote...
Valued Member
Educator
7 years ago
The blue blood vessels (veins) should be the ones carrying the deoxygenated blood + waste (carbon dioxide)
wrote...
7 years ago
I agree well done
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4 years ago
Thanks !
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4 years ago
thank you
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