Completar frases Nutrition function.Versión en línea Complete the texts with the words about nutrition processes. por Laura Riesco 1 waste energy oxygen Respiration happens when cells get from the air to obtain and releases carbon dioxide from the body as . 2 Digestion nutrients changed is when food is into the that cells need . 3 waste cells Circulation nutrients oxygen consists on moving and to the body's , as well as collecting substances produced by cell activity . 4 blood cells Excretion substances body consists on cleaning the by filtering the waste produced by the and expelling them from the .
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