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The nutricious proces involves the following systems: digestive system (to provide our body with nutrients from food), respiratory system (to provide our body with oxygen and to eliminate CO2; circulatory system (distributes oxygen and collects residues and CO2) and excretory system (to expells residues).
Here you have the videos we have studied in the classroom:
Digestion and Excretion
The circulatory system
Excretory system: Urinary system and skin (solid waste is part of the digestive system).
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