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molecule that forms when carbon dioxide attaches itself to the amino group of a haemoglobin molecule
the splitting of water molecules into oxygen atoms and energy-rich hydrogen atoms to be used in...
(also called the stele) the region that includes the pericycle and the vascular tissues in a...
a black substance that coats the lungs of a smoker, causing cancer of the respiratory tract.
when the entire heart, both of the atria and ventricles, is relaxed.